Only 34 of these lightweight early Porsche race cars were ever built. This particular car was once owned and driven by the famous race car driver -- and, later, businessman -- Roger Penske, who won a number of races in it. Later, this car caught fire while in an owner's garage, which ended its racing career.

Seinfeld bought the car in 2001 after it had been thoroughly restored. He proudly drove it on public roads in an episode of "Comedians in Cars Getting Coffee" with Kevin Hart in the passenger seat.