Twin turbos make every car better. Even ol' Enzo wouldn't turn his nose up at this insane 1,300-horsepower F12.

While the X6 is no slouch when it comes to acceleration, endowed with such engine options as a 300-hp turbocharged 3.0-liter I-6, 400-hp twin-turbo 4.4-liter V-8, and 555-hp twin-turbo 4.4-liter V ...