2017 Mercedes-AMG S63 Cabriolet, behold these Teutonic chariots that mix sumptuous luxury with earthshaking power. Huge front air intakes, big wheels, and quad tailpipes hint at the powertrains: The S63 has a 577-hp twin-turbo V-8 with all-wheel drive; the Mercedes-AMG S65 wields a 621-hp twin-turbo V-12 that sends 738 lb-ft to the rear wheels. The cabins are awash in leather, carbon fiber, and all the trappings of a modern Mercedes. There’s a sedan if you need four doors, but coupe and convertible models are certainly more eye-catching.