An 18-year-old driving a Lamborghini was killed when he crashed the car in Mount Sinai during a 2:25 a.m. "test drive" on Friday.

Authorities say that Samuel Shepard lost control of the 2010 car when it struck a guardrail near Route 25A. He was pronounced dead at Stony Brook University Hospital.

Newsday reports, "The passenger and owner of the car, Michael Power, 49, of Port Jefferson Station, was taken to Stony Brook University Hospital, where he was treated for non-life-threatening injuries, police said. Power, a longtime friend of the Shepard family, had met the teenager at a parking lot near his home. They started talking about taking a 'test drive' in the Lamborghini, said Det. Sgt. Michael Fitzharris of the Sixth Precinct."

Fitzharris said, "I think it was probably just a once-in-a-lifetime opportunity for the kid, and this man chose to give him this opportunity." While it's unclear if Shepard was speeding, he said, "I would suspect it was excessively fast."

Shepard's father, who owns an autobody shop, told Newsday that his son loved Lamborghinis and was going to join the Army Rangers before becoming a police officer: "He had his whole future planned out."