Audi R8 Gt3

Audi R8 Gt3 While street-going R8s all boast all-wheel drive, FIA rules mandate that GT3 competitors be rear-wheel-drive only, so the R8 loses its front prop shaft—and, no doubt, a couple hundred associated pounds. The track-only car, built by Audi Sport and quattro GmbH, will undergo testing at GT3 races in the upcoming season and will be available to private customers in the fall of 2009