There's no point mincing words here. The Hennessey V650 builds on the already brutally effective CTS-V Wagon with another 100 horsepower, an electronic exhaust dump, and more.
Yes, that's right: 658 horsepower, 661 pound-feet of torque. Those stats enable some other impressive figures: 0-60 mph in 3.8 seconds, 1/4 mile in 11.7 seconds at 122 mph, and of course, full tread to corded in about 30 seconds.
Hennessey manages this by adding a custom cold air intake, pulley and snout upgrade on the supercharger, long-tube headers, high-flow cats, upgraded intercooler, and a handful of other bits and pieces plus a healthy dose of Hennessey expertise.
However they get there, we like the results. If 658 horsepower isn't enough for you, Hennessey has up to 1,000 horsepower on tap for the CTS-V platform, so just ask.