17. 2021 Mercedes AMG GT C Roadster
This open top AMG pairs grand tourer comfort with supercar thrust. A twin turbo V8 launches the GT C to 60 mph in about 3.6 seconds and pushes on toward the 200 mph mark, yet the cabin remains plush and composed. At roughly $1.13 million as shown, it is equal parts boulevard cruiser and autobahn missile.