The best German V8 ever made? The E90 generation BMW M3 took the world's best sports coupe in a totally different direction. Gone was the screaming six-cylinder S54, replaced by a wailing 8400 rpm V8, the S65. While the purists may have felt betrayed, time has been kind to the E90. Looking back almost twenty years later, it fit perfectly among its V8 rivals, the B7 Audi RS4, and W204 Mercedes C63. And on our new show, "RetroSpective," Jason Cammisa brings all three of them together for a showdow