Caterham fireblade, Audi R8 TDI, ///M3 GTR + CSL are the only cars that I've heard in real life that are closely depicted in the game. Many of the muscle cars I've heard, but something gets lost in translation in the game, the true ball-shaking throatiness just isn't quite there. Maybe in Dolby 5.1, but I've yet to test the theory.