Whether it's a real threat to the sport-focused and highly capable BMW M3 or not, the 2012 Mercedes-Benz C63 AMG Coupe stands as a serious performance coupe in its own right. These videos give us a closer look at the car, in action on the road.

Packing at least 451 horsepower and up to 481 horsepower with the special Development Package, the new C63 AMG Coupe is sure to be a fun car in a straight line--but what about the curves, where true sports cars live? Mercedes seems confident about its capabilities there, too, pitting it in a duel against a sportbike along a coastal highway. See which one wins below.