An interlocutory appeal by a criminal defendant brings to us an issue, as to the legality of a *278 warrantless search of his automobile. Police officers stopped him for traffic offenses at night on a Boston street, and asked him to step out of his car. While he was on the sidewalk with one officer, another officer shined his flashlight into the car and saw several hundred slugs and what looked like and were the handles of a boltcutter. The officer reached in and pulled the tool from under the front seat. He then reached under the seat and pulled out other burglar’s tools. The judge ruled that the search was proper, and we affirm.
The defendant was arrested at the scene on August 15, 1972, and was indicted on October 11, 1972, for possession of burglar’s tools and for giving away slugs to be used to defraud. See G. L. c. 266, §§ 49, 75B. On October 10, 1973, after hearing, a judge of the Superior Court denied the defendant’s motions to suppress the evidence seized from the car. The defendant sought an interlocutory appeal under G. L. c. 278, § 28E, and a single justice of this court determined that the administration of justice would be facilitated thereby, granted the appeal, and reported it to the full court without decision.
We summarize the findings of the Superior Court judge. The defendant, driving his car the wrong way on a one-way street, met a police cruiser. As the two cars passed, two officers in the cruiser yelled for him to stop, but he accelerated and a high-speed chase through city streets ensued. Two and one-half miles away a fire engine blocked the street, the defendant’s car screeched to a halt, and the two officers reached him. He was asked to step out and was taken over to the sidewalk by one officer.
Meanwhile the other officer shined his flashlight into the car and saw several hundred slugs on the seats and a package large enough to contain 500 slugs, bearing the number 500. He also saw what he believed to be the handles of a boltcutter protruding back from beneath the front seat. He pulled them out, and the instrument was indeed a boltcutter. A screwdriver came out with it. He reached under the seat and found two pairs of gloves, a pair of pliers and a device used in auto thefts in substitution for the *279 normal ignition switch. He then went to the sidewalk and informed the defendant he was under arrest.
1.
Interlocutory appeal.
When an application for an appeal is granted under G. L. c. 278, § 28E, trial is stayed pending prosecution and determination of the appeal. The situation is thus similar to that arising under G. L. c. 278, § 30A, on a report before trial. See
Commonwealth
v.
Henry’s Drywall, Inc.
In the present case the interlocutory appeal has apparently delayed a fairly simple trial for more than a year. But a single justice has made the necessary statutory determination that the appeal will facilitate the administration of justice. In view of the uncertainty which has surrounded warrantless automobile searches, we agree with that determination. Compare
Commonwealth
v.
Kane,
2. Burdenof proof and findings. We have recently held that the Commonwealth bears the burden of proving justification for a warrantless search. Commonwealth v. Antobenedetto, ante, 51, 57 (1974). The ruling in the present case was made before that decision, and the judge may well have thought that the burden was on the defendant rather than on the Commonwealth. In a brief prepared before the Antobenedetto decision the defendant attacked the judge’s findings and argued that the burden of proving the legality of the search was on the Commonwealth.
*280 In this setting we have examined the transcript of testimony with particular care, and we conclude that it fully supports the judge’s subsidiary findings. On the most critical point, the officer who conducted the search, called by the defendant, testified that when the defendant was taken out of the car he saw a few hundred quarter-size slugs and “handles of what appeared to be bolt cutters,” protruding to the back of the car from underneath the front seat. On cross-examination by the Commonwealth, asked whether he knew they were slugs, he said, “They looked like slugs.” On redirect examination he said, “I had an idea ... they [the handles of the boltcutterj were [part of a burglar’s tool] but I couldn’t say that they were bolt cutters just by looking, no.” This testimony is internally consistent; it fully supports the judge’s finding that the officer “observed several hundred ‘slugs’ ” and handles which he “reasonably believed’ ’ were part of a boltcutter.
3.
Search incident to arrest.
The Commonwealth contends that the search of the car was lawful because incident to a valid arrest, citing
United States
v.
Robinson,
More important, however, is the fact that the judge did not uphold the search on this ground and hence did not make a finding that there was a “custodial arrest” before the search. See
United States
v.
Robinson, supra,
4.
Threshold inquiry.
The police had probable cause to stop the car.
Commonwealth
v.
Wilson,
The defendant distinguishes the facts of our prior cases, and argues that once the occupants were out of the car (the transcript of testimony shows that a companion got out of the car with the defendant) the use of the flashlight did constitute a search and was unlawful under recent Supreme Court decisions, citing
Coolidge
v.
New Hampshire,
“Generally, less stringent warrant requirements have been applied to vehicles” than to homes or offices. One factor has been “the exigent circumstances that exist in connection with movable vehicles.” Another is that one has “a lesser expectation of privacy in a motor vehicle” than in one’s person or building. The “exercise of a desire to be mobile does not, of course, waive one’s right to be free of unreasonable government intrusion. But insofar as Fourth Amendment protection extends to a motor vehicle, it is the right to privacy that is the touchstone of our inquiry.”
When the police officer first looked into the car in the present case, he did not have probable cause to believe that the car would yield any particular type of contraband or evidence useful for prosecution of crime. Nor was his “search” limited to the exterior of the car, or justified as an attempt to identify the car. On the other hand, there was no search of the glove compartment, the trunk, or closed containers in the interior of the vehicle. It is hard to think of a boltcutter or hundreds of quarter-size slugs as “personal effects, which the Fourth Amendment traditionally has been deemed to protect.”
Cardwell
v.
Lewis, supra,
We think the officer was reasonable in his limited sight intrusion into the defendant’s car in order to protect himself and others from persons or things which might be in the car and might endanger personal safety.
United States
v.
Santana,
5.
Subsequent search: probable cause.
The judge ruled that when the officer first reached into the car he had probable cause to search it. At that point he knew that the defendant had accelerated when told to stop for a minor traffic violation. The defendant had led the police on a two and one-half mile high-speed chase through a densely populated area and had stopped only when a fire engine blocked his escape. The officer had seen the slugs and what he reasonably believed to be a boltcutter. While possession of such objects is not a crime, their presence in the setting was sufficient to create probable cause to believe that they were instruments intended for criminal use. They were lawfully seized, as were the like objects found under the front seat.
Commonwealth
v.
LaBossiere,
6. The order denying the defendant’s motions to suppress was correct. The cases are to be remanded to the Superior Court for further proceedings consistent with this opinion.
So ordered.
Notes
Accord,
United States
v.
Lee,
