Opt for the top-of-the-line 1,000-horsepower option, though, and your 2016 CTS-V will ditch the supercharger in place of a twin-turbo setup. With that in place, Hennessey expects your suped-up super sedan to reach speeds in excess of 240 mph.
If you want one, move quick; Hennessy is only building 24 examples of its 1,000-horsepower CTS-V. Otherwise, you’ll be stuck with only 750 or 800 horsepower. Nobody wants that.