If you want to upgrade your 2015 Cadillac Escalade with 557 horses and a slightly more agile and aggressive appearance, spend an additional $16k for the HPE550 upgrade by Hennessey. Hennessey Performance Engineering, a favorite among high-performance aftermarket tuners, has developed a supercharger upgrade for its new 6.2-liter direct-injected V8 engine.

“Our HPE550 Supercharged Escalade is the perfect balance of attitude, performance and luxury. It’s fast and versatile, and proudly American,” said Hennessey CEO and partner Don Goldman.