OPINION
The question presented concerns the application of joint and several liability in a strict-liability, crashworthiness context.
The civil action underlying this appeal pertains to a fatal motor-vehicle accident that occurred on April 21, 1995, on Route 30, in Lancaster County. A tractor-trailer driven by Appellee Frederick W. Petroll, traveling above the legal rate of speed and at approximately 38 miles per hour, collided with the rear of a nearly-stationary Chevrolet Lumina automobile. The automobile was crushed against a third vehicle, a fire ensued, and the Lumina’s three occupants, Douglas L. and Connie J. Harsh, husband and wife, and thеir infant son, Tyler, were killed.
Petroll was subsequently tried and convicted on three counts of homicide by vehicle, 75 Pa.C.S. § 3732.
See Commonwealth v. Petroll,
The Harsh family members’ estates (the “Estates”), commenced the present civil action against Petroll and his principals, HAC Farm Lines Agricultural Cooperative Association and Cyned Transport Corporation (collectively “Appellants”); General Motors Corporation, as the Lumina manufacturer; and others. The Estates pursued damages against General Motors on a strict-liability, crashworthiness theory, 1 *610 asserting that а design defect in the Lumina’s fuel distribution system was a substantial cause of the fatal fire. General Motors and Appellants lodged cross-claims against each other, seeking, inter alia, contribution relative to any liability that would be assessed against them. See 42 Pa.C.S. §§ 8321-8327 (embodying the Uniform Contribution Among Joint Tort-feasors Act). The matter proceeded to trial, and, at the close of the evidence, based on Petroll’s criminal convictions, the trial court entered a directed verdict against Appellants as to liability in negligence and causation (with Petroll bearing primary liability and his principals’ liability being vicarious). In this regard, the court specifically ruled, and instructed the jurors, that Pеtroll’s negligence was a substantial factor in causing the deaths of the Harsh family members.
The jurors returned a verdict in accordance with this charge. In addition, they determined that the Lumina was defective and the defect was an additional, substantial factor in causing the fatalities. Damages were assessed by the jury in the amount of $8.2 million, as to which the trial court determined that Appellants and General Motors would bear joint and several liability. For purposes of quantifying the defendants’ respective contribution interests, however, the trial court also issued instructions requiring the jurors to allocate percentages of responsibility for the Estates’ losses bеtween General Motors and Appellants, and the jury assigned sixty percent of the responsibility to General Motors, and forty percent to Appellants. The verdict was molded to include delay damages, see Pa.R.C.P. No. 238, and entered against Appellants and General Motors, jointly and severally.
*611
In post-trial motions, Appellants contended,
inter alia,
that under Pennsylvania law, where claims against separate defendants are premised on distinct theories of negligence and crashworthiness and the injuries attributable to each are capable of division on some rational basis, the negligent driver and the manufacturer cannot be subject to joint and several liability. Rather, Appellants asserted, dаmages must be fully apportioned, and liability must be several only and limited to each defendant’s respective, apportioned share. Appellants’ legal point in this regard was supported by a line of federal court decisions.
See, e.g., Carrasquilla v. Mazda Motor Corp.,
The trial court, however, rejected this position, finding nothing in the strict-liability, crashworthiness context that
*612
would justify departure from time-honored principles of Pennsylvania law maintaining that: a tortfeasor whose negligence was the legal cause of a plaintiffs injury is responsible for all injuries proximately flowing from his conduct;
4
two or more persons bear joint and several liability, although they may have acted independently, if their tortious conduct causes a single harm that cannot be apportioned;
5
the indivisible nature of an injury is a weighty factor in determining whether the harm to a plaintiff is capable of apportionment;
6
and death, by its nature, is an indivisible injury. In particular, the trial court relied on the decision in
Stecher v. Ford Motor Co.,
The Commonwealth Court affirmed on appeal, for essentially the same reasons as those relied on by the trial court,
see Harsh v. Petroll,
We allowed appeal, limited to the question, as framed by Appellants, which follows:
Is the Commonweаlth Court’s holding that the Petroll Defendants and [General Motors] were joint tortfeasors based on general principles of liability law, a holding which ignores that the plaintiffs’ claims were based on the crashworthiness doctrine and the evidence established that the injuries caused by the initial impact and the uncrashworthiness of the [General Motors] vehicle were divisible in nature, a question of substance which has not been decided by this Court?
*614
Harsh v. Petroll,
Presently, Appellants primarily maintain the position that they presented to the trial court and the Commonwealth Court, namely, that doctrinal requirements associatеd with crashworthiness theory are in irreconcilable tension with the imposition of joint and several liability, because plaintiffs pursuing crashworthiness claims must establish enhanced harm over and above that which would have been sustained via initial impact. See supra note 1. Thus, Appellants assert that where plaintiffs elect to proceed with a strict-liability, crashworthiness case, they must necessarily forego claims against negligent tortfeasors for the divisible, enhanced injuries. 8 Implicit in various aspects of Appellants’ argumentation is an attack on the trial court’s decision to denominate Pet-roll’s conduct as a substantial factor in causing the deaths of the Harsh family members based upon his criminal convictions. 9 Indeed, substantial passages of Appellants’ briefs are dedicated to elaborating upon the evidence suggesting that the Harshes survived the initial impact caused by the truck for which Appellants bore responsibility, in furtherance of the position that Petroll’s negligent conduct should be viewed as *615 substantially remote from the losses associated with the resultant fire. Appellants nevertheless concede that, had the Estates not included the claims against General Motors on a strict-liability, crashworthiness theory, the Estates would have been entitled to assert claims for full liability as to all injuries, including deаth, against Appellants. Appellants’ principal argument thus contemplates that the Estates’ election to assert a crashworthiness claim yields an essential, corollary curtailment of the liability of an original negligent tortfeasor. Appellants cite Section 433A of the Second Restatement of Torts and Sections 16(a) and (b) of the Third Restatement of Torts, Product Liability, as supportive of this position, as well as a line of Pennsylvania intermediate appellate court decisions that have employed a multi-factor test to determine the propriety of apportionment. 10 Finally, Appellants stress that they had no control ovеr the design of the Lumina’s fuel distribution system, and therefore, contend that they should not be liable for deaths that it caused.
Appellees, on the other hand, vigorously dispute Appellant’s version of both the facts and the applicable law. Factually, Appellees emphasize the violent nature of the collision caused by Petroll’s negligence, and, in particular, the status of the crash as the impetus leading to the breach of the Lumina’s fuel distribution system, as the cause of the sparks that ignited released gasoline vapor, and as the reason why the Harshes were unable to dislodge the doors of the Lumina to escape the crushed and burning vehicle. Appellees argue that it is very clear that Petroll’s negligence combined with the design defect in the vehicle fuel system that was found by the jury to have been a concurrent cause of the fatalities. In this regard, they derive support from the facts; the directed verdict entered by the trial court against Appellants as to substantial-factor causation; the jury’s verdict; and Appel *616 lants’ concession that had General Motors not been hailed into court on a crashworthiness theory that there would be no argument that Appellants were not susceptible to liability for the fatalities. 11 In response to Appellants’ position that they had no сontrol over the Lumina’s design and the fire and deaths would not have occurred absent such defect, Appellees observe that they also had no control over Petroll’s criminally negligent conduct, without which there would have been no accident and no injuries at all.
For these reasons, and relative to Appellants’ liability, Appellees sharply criticize Appellants’ assertion of a bright-line division between the impact-related injuries suffered by the Harshes immediately preceding the fire, as well as Appellants’ associated suggestion that there can be but one substantial cause of enhanced injuries in a crashworthiness case, аs distortions.
12
Indeed, the Estates indicate that these asserted distortions have become so pervasive in the present litigation that they have impacted this Court’s Order framing a limited allowance of appeal (which was taken directly from Appellant’s petition for allowance of appeal), since the issue as framed appears to assume the correctness of enforcing the above-described, bright-line division as a restriction on Appellants’ liability.
See Harsh,
*617 As to this issue, Appellees endorse the Commonwealth Court’s and the trial court’s decisions to apply general tort law precepts in the crashworthiness context. In their presentations regarding these principles, Appellees note that significantly different policies underlay the liability determination in the first instance (as to which a predominate concern is to limit manufacturer liability to injuries which their produсts can be fairly said to have caused), versus the imposition of joint and several liability (which favors the interests of an innocent, injured plaintiff over those of defendants who are concurrently responsible for the injury). Appellees believe that the federal court decisions cited by Appellant, see supra note 2, are not persuasive, since they reflect little or no effort to address these long-standing principles and policies enforced in the Pennsylvania courts. Furthermore, Appellees contend that the rule advocated by Appellants would present plaintiffs with an unfair and untenable choice, in terms of determining whether or not to assert crashworthinеss claims, which would turn on the financial resources of the various, prospective defendants rather than the merits of the respective causes of action. General Motors also describes Appellants’ position as perverse, since it would shift liability from Petroll, who is guilty of egregious fault, to General Motors, whose liability was determined with no assessment of fault.
Appellees also take issue with Appellants’ citations to various secondary materials. For example, Appellees note that Appellants selectively discuss only subsections (a) and (b) of Section 16 of the Third Restatement of Torts, Products Liability, which delineate a manufacturer’s (and not the negligent tortfeasor’s) liability relative to enhanced injuries. However, they omit any reference to the subsection that is directly relevant to the liability of the negligent tortfeasor and which expressly prescribes that such actor “is jointly and severally liable or severally liable with other parties who bear legal responsibility for causing the harm, determined by applicable rules of joint and several liability.” Restatement (Third) of Torts, Products Liability § 16(d) (1997) (emphasis added). 13 *618 Appellees note that a straightforward application of Section 16 of the Restatement, therefore, would not immunize accident-causing drivers from harm proximately flowing from their conduct, but rather, expressly confirms their jоint and several responsibility (together with of the manufacturer where liability is established) in relation to enhanced injuries. 14 Appellees also cite many decisions from other jurisdictions that are supportive of their position. 15 For these reasons, although *619 General Motors had sought relief from the verdict on other grounds, it joins with the Estate in opposing Appellant’s present effort to obtain an apportionment. 16
At the outset, we agree with the Estates that the issue as stated in our limited grant Order is not aptly framed. Its focus on the division between the impact-related, pre-fire, nonfatal injuries and the enhanced harm, i.e., the fatalities, is misdirected in light of the relief that Appellants request— rеlief from liability for the fatalities. In determining the availability of such redress, the Estates are correct that the inquiry should center on Appellants’ responsibility in relation to the injury enhancement.
As to this additional harm, the evidence adduced by the Estates was plainly supportive of substantial-factor causation. As noted by Appellees, such evidence entailed the proof that Petroll’s negligence caused a violent collision that crushed the Harshes’ automobile, physically breaching the fuel distribution system and generating the sparks which ignited the ensuing *620 fire, and prevented the Harshes from escaping the burning vehicle. 17 Moreover, in light of the limited grant Order, we decline to look behind the trial court’s decision to direct a verdict against Appellant as to proximate causation. See supra note 9.
With this perspective, and upon review of the parties’ legal arguments, the relevant authorities, secondary materials, and the record, we are in essential agreement with Appellees’ core position that the. normal rules of concurrent causation and joint and several liability operative in product liability cases should also pertain in the crashworthiness context. As Appellees have developed, common law joint and several liability evolved on the theory that, as between an injured, innocent plaintiff and defendants whose breach of some duty is proximately related to the injury, it is preferable to allocate the risk of a default in the payment of due compensation to the defendants.
See, e.g., Taylor v. Celotex Corp.,
Further, as noted by the trial court, Pennsylvania tort law also maintains that multiple substantial factors may cooperate to produce an injury,
see, e.g., Jones v. Montefiore Hosp.,
*622
Although there are a modest number of decisions to the contrary, we find much common ground between this position and the holdings and reasoning of other courts, see
supra
note 15, the Restatement positions as developed above, and the relevant commentary.
21
Regarding Appellants’ reliance on Pennsylvania decisions discussing multiple factors in assessing the availability of apportionment,
see supra
note 10, the bulk of the collected decisions arose in the context of pre-trial settlements and/or pre-trial liability determinations in the absence of a determination of substantial-factor causation from a trial setting.
See Harka,
Further, we recognize that the concepts of intervening and superseding causation may be relevant in crashworthiness and/or “second collision” cases, as in other tort litigation, depending upon the particular circumstances involved.
See generally Marshall v. City of Pittsburgh,
Finally, we are aware of the policy arguments that have been made in favor of the broader use of apportionment in tort cases involving concurrent causation, see, e.g., Frank J. Vandall, A Critique of the Restatement (Third), Apportionment As It Affects Joint and Several Liability, 49 Emory LA. 565 (2000), and of the efforts of the General Assembly in this direction in the form of the attempted restructuring of the Comparative Negligence Act, see supra note 19. This case was not selected for review, however, to consider the possibility of a retrospective alteration to the common law and to the prevailing statutory liability scheme in effect as of the trial and entry of judgment in this case, which entail the application of joint and several liability.
In summary, although crashworthiness theory establishes a basis to support manufacturer liability for enhanced injury, it does not require that a manufacturer be the exclusive cause of such injury, nor does it diminish the causal link that exists between an initial collision and all resultant harm. Since Petroll’s negligence and the automobile design defect discerned by the jury were both determined to have been substantial factors in causing the deaths of the Harsh family members, the trial court did not err in assessing liability jointly and severally.
The order of the Commonwealth Court is affirmed.
Notes
. Crashworthiness doctrine, introduced as such in
Larsen v. General Motors Corp.,
.
See also Harries v. General Motors Corp.,
. The evidence inсluded proof that the Harsh family members were properly restrained by seat belts; evidence that the airbags in the Lumina had properly deployed at the time of the impact; the development of the particular non-fire, impact-related, orthopedic injuries suffered by each member of the Harsh family; expert testimony that the fire resulted from a vehicle, fuel-system defect; and evidence that Mr. and Mrs. Harsh were conscious in the aftermath of the collision and, indeed, were attempting to escape the vehicle.
.
See, e.g., Menarde v. Philadelphia Transp. Co.,
.
See, e.g., Powell v. Drumheller,
.
See, e.g., Smith v. Pulcinella,
. Appellants and General Motors raised many issues in the Commonwealth Court other than the question of the proper application of joint and several liability in the strict-liability, crashworthiness context. Their other claims were rejected by the intermediate appellate court and reside outside the limited scope of this appeal.
. Appellants are not wholly consistent in this argument, and their position appears to shift substantially in their reply brief, in which they ultimately cоntend that the matter of joint and several liability should have been submitted to the jury. See Reply Brief of Appellants, at 10.
. This approach is problematic, because Appellants raised this claim separately in their petition for allowance of appeal, but it was not accepted for this Court’s review, as reflected in the limited grant Order,
see Harsh,
.
See Smith,
. General Motors also references Appellants’ concession in the post-trial proceedings to the effect that: "Petroll’s homicide by vehicle conviction dictates that he was a substantial factor in bringing about the deaths of the [members of the Harsh family].” Brief In Support of Motions for Post Trial Relief On Behalf of Defendants, at 18.
. There is no question, however, that General Motors should benefit from such division, since the defect attributed to its product was not a substantial factor in causing the collision. Accordingly, General Motors would have been entitled to apportionment of any damages specifically associated with the pre-fire injuries, upon request.
. See also id. cmt. e & Illustration 7 ("When the plaintiff proves defect-caused increased harm ... liability of the seller and other tortfeasors is *618 joint and several. Joint and several liability is imposed because there is no practical method of apportioning responsibility that would reflect the separate causal contributions of those tоrtfeasors who caused the increased harm.”); see also id. ("In those jurisdictions that retain the common law rule [of joint and several liability], all parties bear full responsibility for the entirety of the harm.”).
. Appellees note a similar omission in Appellants’ citation to Section 433A of the Second Restatement of Torts: Appellants cite to Section 433A(1), which covers circumstances in which damages can be apportioned, but omit any citation to subsection (2) of Section 433A, which pertains to circumstances in which damages cannot be apportioned. Further, there is no mention of the associated commentary clarifying that death, as an indivisible injury, falls within this lаtter category.
See
Restatement (Second) of Torts § 433A & cmt. i.
See generally Martin v. Owens-Corning Fiberglas Corp.,
.
See, e.g., Mitchell,
. The Product Liability Advisory Council, Inc. has also filed a brief as
amicus curiae
in support of General Motors’ position. A substantial portion of this
amicus
effоrt is dedicated to developing the position that strict liability theory is inconsistent with crashworthiness doctrine, at least in the design defect setting. In this regard,
amicus
notes that foreseeability resides at the core of crashworthiness theory, since by enforcing a duty to make products which will reasonably minimize harm in the event of accidents, courts require manufacturers to anticipate the possibility and nature of future accidents. In
Phillips v. Cricket Lighters,
. Notably, although they filed a reply brief, Appellants offer no answer to Appellees’ repeated and strongly-worded contention that, even if the violent collision involving a fifteen-ton truck overrunning an almost-stationary vehicle at nearly forty miles per hour were not in and of itself sufficient to constitute substantial-factor causation, the impact-related condition of the Lumina that foreclosed the Harshes' escape plainly provides a factual predicate for substantial-factor causation in relation to the resultant fatalities.
.
Accord Huddell v. Levin,
.
See
42 Pa.C.S. § 7102 (prescribing the right of contribution and directing that ”[t]he plaintiff may recover the full amount of the allowed recovery from any defendant against whom the plaintiff is not barred frоm recovery”). In 2002, the Pennsylvania General Assembly amend
*621
ed the Comparative Negligence Law to curtail joint and several liability.
See
Act of June 19, 2002, P.L. 394. However, such legislation was deemed invalid by the Commonwealth Court based on the procedures employed in its enactment.
See DeWeese v. Weaver,
. Our decision here touches on matters in conflict between the Third Circuit Court of Appeal’s decision in
Huddell,
. See, e.g., Michael Hoenig, Resolution of 'Crashworthiness' Design Claims, 55 St. John L.Rev. 633, 703-04 (1981) ("In the enhanced injury case, the claimant does not apportion the total injuries sustained in the collision between the negligent driver causing the accident and the manufacturer whose design aggravated the injury. Similarly, the plaintiff is not required to divide up an indivisible injury.... The plain fact is that the tortfeasor who precipitated the accident is liable for all of the plaintiff’s injuries.” (emphasis in original)).
