Mercedes-Benz CL63

They’re more like road-bound private jets than two-door coupes: big, thundering on the outside (but quiet inside), and relentless. Fortified by Mercedes’ mad-science lab, AMG, the twin-turbo engines produce thrust as if they were ripped from a Boeing 777’s wings. The CL63’s V-8 makes 536 hp; the CL65’s V-12 boils at 621 hp. These cars are so overwhelmingly fast, so comfortable at speed and so beautifully built that it’s easy to overlook that they’re huge, expensive cars with tiny rear seats.