Kleemann K-box Tuning Module Turbo W205 C400 C450 Mercedes C Class Chip Tune on 2040-parts.com

Hennessey Cadillac Escalade gets 557 hp

The 2015 Cadillac Escalade is about as American as an SUV can be. We didn't find the 420-hp, 6.2-liter V8 lacking in any way, but if you want something with a little more grunt, Hennessey Performance Engineering and its HPE550 upgrade should help. Hennessey says the HPE550 Escalade package bumps output to 557 hp and 542 lb-ft of torque with the help of a belt-driven supercharger producing 6 psi.

Video: Preview Russo and Steele's auction at Monterey

Monterey weekend is more than just cars on golf courses during the Pebble Beach Concours d'Elegance--there is plenty of auction action, too. Here's a video preview of Russo and Steele's auction with Autoweek digital editor Andrew Stoy and Hagerty's Rob Sass. The Monterey Week is packed with car shows, vintage racing and car auctions.

Audi welcomes Porsche back to Le Mans

Porsche is returning to the 24 Hours of Le Mans next weekend, and reigning champ Audi figured it would be nice to send a little welcoming committee to Stuttgart, Germany. The committee consisted of one driver in an R18 e-tron quattro LMP1 car. Keen eyes will notice the race car passing a red tractor, also a Porsche design.