YORK -- A Maine man's condition was upgraded to stable on Monday following a rollover accident on Interstate 95 where he was thrown from the back seat of a car and pinned by another vehicle.

According to state trooper Mike Cook of the Maine State Police, a Mustang and a BMW were "racing" north on the highway when the vehicles merged and crashed into the guardrail.

The collision caused Brett Halliday, 28, of an unknown address in southern Maine, to be ejected from the Mustang and thrown over the bridge just before the weigh station, where he landed on the embankment of the York River.

The BMW crashed through the guardrail and landed on top of Halliday's leg.

With the help of two other people, Joseph Soares, who lives in Taunton, Mass., said he and the other witnesses were able to lift the car off of Halliday's leg and help him move from underneath the BMW.

"If there is ever an example of God looking over somebody, this is it," Soares said. "He was lucky to have a bunch people around right away that were able to help him."

Bob Guethlen and his sister, Janis, of Rockwood, Maine, said they were approximately two car lengths behind the cars when the accident occurred.

"It looked like a stunt out of a movie," Janis Guethlen said.

"They were flying," Bob Guethlen said. "It looked like they were stuck together."

Halliday was transported to Portsmouth Regional Hospital following the accident where he was listed in critical condition. On Monday, he was transferred to the Maine Medical Center in Portland, where his condition was upgraded,

York police officer Owen Davis, an accident reconstruction specialist, was on the scene of the collision Sunday afternoon conducting an investigation of the crash.

According to York Sgt. Thomas Baran, Davis was able to gather all the information he needed on Sunday and is now working on calculating the speed of the vehicles and other information concerning the accident. However, it could be two weeks or more before Davis finishes his investigation, said Baran.

And according to Cook, the investigating officer, charges could be filed pending the outcome of the reconstruction work.

"There is a lot of ground work to do now before any final determinations are made," said Baran, who added that when Davis finishes his investigation he will submit it to the Maine State Police for final approval.

The York Fire Department, Kittery Fire Department, Maine State Police, Portsmouth Naval Shipyard Ambulance, York Police and Maine Marine Patrol responded to the accident, said Baran.

"The rescue process went very well," said Baran. "I think it speaks well to our facilities and personnel in the area."

Michael Dempsey, 29, of Franklin, N.H., was driving the BMW, and only sustained minor injuries. The driver of the Mustang, Rebecca Knox, 25, of South Portland, Maine, sustained serious injuries and was taken to Portsmouth Regional Hospital. Tiffany Noel, 23, of Westbrook, Maine, who was in the front passenger seat of the Mustang, was treated for minor scrapes and bruises at York Hospital.

Officials from the Maine Department of Environmental Protection were also called to the accident scene because the BMW was leaking motor oil near the river.

"They were able to put down some absorbent pads to soak up the oil," said Baran. "It turned out to be a minor thing."