Cool cars from the New York Auto Show

This new M6, essentially a two-door convertible version of the BMW M5 sedan, has a twin-turbo V8 instead of the 10-cylinder engine that powered the previous version. Horsepower is up slightly to 560 from the current car's 555. Fuel economy is improved by around 30%, though, as is torque, which translates to the engine's actual pulling power.

NEXT: Nissan Altima