A Long Island teen was killed after crashing a Lamborghini he took out for a test-drive, according to Newsday.

Samuel Shepard, 18, was behind the wheel a family friend's 2010 Lamborghini Friday when he lost control and hit a guardrail in Mount Sinai.

The Lamborghini's owner and longtime friend of the Shepard's, Michael Power, 49, was a passenger in the vehicle and sustained non-life-threatening injuries, Newsday reported.

Shepard, however, was pronounced dead at Stony Brook University Hospital.

According to Det. Sgt. Michael Fitzharris, excessive speed is believed to be have been a major factor in the 2:25 a.m. crash.

Fitzharris said Shepard and Power, who's known Shepard since he was 4, met at a parking lot near Power's house and spoke about test driving the fast sports car. The crash happened while the two were returning to the parking lot.

"I think it was probably just a once-in-a-lifetime opportunity for the kid, and this man chose to give him that opportunity," Fitzharris said.

The teen's father, Gene, said Lamborghinis were Samuel's favorite cars.

"Since he's a kid, he's been around cars," Gene said.

Shepard had just graduated Mount Sinai Hospital in June was supposed to start serving for the elite Army Rangers in October. He had dreams of becoming a police officer after, Gene told Newsday.

"He had his whole future planned out," Gene told Newsday. "He knew exactly what he was going to be doing."