The new M6 Gran Coupe is a luxury 4-door sedan that offers a ridiculous amount of power and can easily scare the heck out of your passengers.  It aims to compete with cars like the Audi S7 and the Mercedes-Benz CLS63.   Its power comes from a direct-injected 4.4-liter twin-turbo V8 which puts out a whopping 560 horses and a peak torque of 500 pound-feet.  This power is delivered to the rear wheels through a seven-speed dual-clutch transmission and an electronically controlled Active M Differential for optimal traction.  The M6 will do 0-60 mph in just 4.1 seconds.