Each of the four defendants was charged in three indictments with assault with intent to rob while armed with a dangerous weapon and with armed robbery. After a trial subject to G. L. c. 278, §§ 33A-33G, the jury returned verdicts of guilty on all the indictments. Each defendant appeals, with 188 assignments of error based on a total of at least 1,714 exceptions taken before and during the trial. The only assignments of error now argued relate to the denial of the defendants’ motions to suppress evidence and for directed verdicts, and to the denial of Breen’s motion for a new trial. We consider only the argued assignments.
Commonwealth
v.
Nunes,
We summarize the evidence. On September 25, 1966, at approximately 11:50 p.m., the owner and several employees of Giovanni’s Restaurant on Route 9 in Fraroingham were preparing to close the restaurant for the night. Two men were seated at a table near the end of the bar. Norman Leeointre, a bus boy, was seated on a bar stool. John Cullati, the owner, and John Kelly, a bartender, were be *443 hind the bar. Cullati had taken the day’s receipts from the cash register, placed rubber bands around the bills, and put the money in his pockets. The two men at the table stood up. One of them, identified as Breen, was wearing a “cranberry red” sports jacket. He went around the bar behind Cullati, produced a gun and told Cullati to put his head and hands on the bar. The other man, wearing a beige or tan sweater, stood behind Lecointre with a gun. He was identified as McCormack. The man in the red jacket took the money from Cullati. The two men left the restaurant at midnight or one or two minutes before.
A Framingham police sergeant, responding to a telephone call from Cullati, arrived at the restaurant about six minutes after the robbers had left. The Framingham police issued an all-points bulletin for two men, describing one man as wearing a “cranberry red” sports jacket and the other as wearing a beige or tan sweater. The bulletin was received by radio at 12:08 a.m. by Officers Fitzpatrick and Sullivan of the Wellesley police. The officers parked their cruiser on a ramp leading to Route 9, about twelve feet from and perpendicular to the east bound lane of traffic. The ramp is about six or seven miles from Giovanni’s Restaurant. Within minutes the officers saw a Dodge compact-type automobile traveling east on Route 9. In the bright light of the ramp intersection the police officers could see that there were four men in the car, two in front and two in the rear. One of the men in the rear seat was wearing a cranberry-colored jacket, the other a beige or tan sweater. The police officers, proceeding east, followed the car on Route 9 for about three quarters of a mile, when Officer Sullivan, who was driving, put on the high beam headlights. He noticed that the man on the left rear seat, in the beige sweater, turned his face to the left and put his hand to the side of his face; the man on the right turned his face to the right. At this point both officers were satisfied that the clothing of the two men in the rear seat matched the description given in the radio broadcast at 12:08 a.m. They informed their headquarters by radio that they intended to *444 stop the car in Newton. Officer Sullivan put on the siren and dome light to signal the car to stop. The car did not stop, but continued for about a quarter or a half mile in the breakdown lane, then drove onto Ramsdell Street, a dead-end street in Newton, and continued for approximately 300 feet before finally coming to a stop. Officer Fitzpatrick approached the car with his gun drawn and arrested the occupants, the four defendants. Hurley was the driver, and Sullivan was seated to his right. Breen and McCormack were seated in the rear. Newton police arrived about a minute later, and several minutes after that Lecointre, the bus boy, arrived and identified the defendant Breen. The police thereupon searched the car and found two rolls of bills in rubber bands in Sullivan’s pockets. There was a clip-on type holster on the back of Sullivan’s belt under his sweater. There were also three fully-loaded automatic weapons and a pair of gloves under the seats of the car.
1. The judge held a voir dire on the defendants’ motions to suppress evidence. He found that Officers Fitzpatrick and Sullivan had probable cause to arrest the defendants, and that the seizure of the items in the car was incidental to a lawful arrest. He denied the motions. The defendants assert that the judge was in error.
The Commonwealth concedes that the defendants were under arrest when their car was stopped and they were restrained at gunpoint by the Wellesley police officers. See
Commonwealth
v.
Holmes,
Without intimating that we would reach the same conclusion as did the majority of the Supreme Court of California in the
Mickelson
case,
2
we point out that the case is readily distinguishable from the one before us. The robbery in the
Mickelson
case took place in a metropolitan area. As the initial search by the police officer demonstrated, there was no reason to suspect that an automobile had been used. In such a heavily populated area it was quite likely that even at 2 a.m. there would be more than one tall, dark-haired white man wearing a red sweater. Moreover, when first seen, the car driven by the suspect was going
toward
the
*446
scene of the robbery. In the case before us the robbery took place just before midnight on the outskirts of a suburban community along a major highway. It would be highly improbable in such circumstances that more than one pair of companions, one in a cranberry-colored sports jacket and the other in a beige sweater, would be found in the general vicinity. In view of the location of the restaurant it would also be reasonable for the police to expect that a car would be used as a means of escape. On this premise, the presence of at least a third man, not seen by the victims, to operate the getaway car was to be anticipated. See, e.g.,
Commonwealth
v.
Ladetto,
The action taken by the police was in the circumstances altogether reasonable. Ten minutes after the completion of an armed robbery, they had received descriptions of the two men known to have been involved. Within minutes after that, they saw a car with four men on the same road as the restaurant, proceeding away from the scene of the robbery. Two of the men matched the descriptions they had received, and acted suspiciously when they realized they were being followed. To risk allowing the men to escape would have been unthinkable. Common sense required that the car be stopped. See
Commonwealth
v.
Lawton,
2. The defendants contend that the testimony concerning Lecointre’s identification of Breen ten minutes after the arrest of the defendants should have been excluded even though the arrests and identification took place before June 12, 1967, when the rules of
United States
v.
Wade,
We think the defendants’ argument is answered by what we said in
Commonwealth
v.
Bumpus,
3. The defendants Hurley and Sullivan argue that their motions for directed verdicts should have been allowed. Hurley, the driver of the car, contends that there was no evidence that he had any part in the robbery, and that an inference that he participated in the crime could not be drawn from the fact that he associated with persons who committed it, citing
Commonwealth
v.
Fancy,
We think that the jury were warranted in concluding that both defendants participated as principals in the robbery. Two men, each with a gun, entered and robbed a restaurant at midnight, in a relatively sparsely settled area adjacent to a major highway. Within fifteen minutes the two men were observed in a car driven by Hurley, accompanied by Sullivan, on that same highway, six or seven miles away. In the car were found not only the stolen money and the guns used by the two men, but a third gun as well, hidden under the seats. The jury could reasonably infer that the four had driven together to the restaurant;
*448
that while Breen and McCormack entered the restaurant, Hurley and Sullivan waited outside to observe and to warn of the approach of others, and to keep the escape car in readiness; that Sullivan had a gun in his hand; and that after Breen and McCormack emerged, the three guns were concealed under the seats, the money given to Sullivan, and the car with the four men driven off by Hurley. These inferences were sufficient to sustain verdicts that Hurley and Sullivan were guilty as principals with Breen and McCormack.
Commonwealth
v.
Medeiros,
4. The last issue argued concerns the denial of Breen’s motion for a new trial. The motion was based upon "newly discovered” evidence that Breen was not competent to stand trial. The only evidence offered was that Breen received 100% disability compensation for a "mental condition” connected with his service in the United States Navy. The judge denied the motion. There was no error. A motion for a new trial is addressed to the judge’s discretion.
Commonwealth
v.
Dascalakis,
Judgments affirmed.
Notes
See the opinion of Fox, P. J. of the District Court of Appeal in the
Mickelson
case, 26 Cal. Reporter 152. Compare
Terry
v.
Ohio,
