Convertibles are cars built to be seen in, and this one is no exception—but in these 2018 Mercedes-AMG GT, performance is the real point. A 4.0-liter twin-turbo V-8 pairs with a seven-speed automatic, making 469 horsepower in the GT model. With 550 hp, the GT C shaves 0.2 second off the base car’s claimed 3.9-second zero-to-60-mph time. GT C models get rear-wheel steering and a limited-slip differential from the racy GT R coupe. Expect the GT roadsters to arrive in Mercedes-AMG showrooms in fall 2017.