While gullwings are no longer part of the design, the Mercedes-AMG GT S is still set to swoop in and snag buyers away from its archnemesis, the Porsche 911. There are two models. First is the GT S, with a 503-hp 4.0-liter twin-turbo V-8 and a seven-speed automatic; it has a 0-60-mph time of 3.0 seconds and a top speed of 193 mph. A second model, the milder GT with 456 hp, debuts later. With a hatchback design, you could almost argue this is a sports car that’s practical. Almost.