Mecum's upcoming Indianapolis auction will include the sale of one of the two surviving GT40 Roadster prototypes.

An aggressive body kit features broader fenders, a big wing, and huge vents in the hood. A track-spec version makes 1,500 hp.

The car's development took nearly a decade, with its chassis and body constructed from carbon fiber-reinforced polymer. The LFA's V10 engine, developed in collaboration with Yamaha, is the LFA's ...