American Top Gear was never as good as the old, UK Top Gear, but one of the presenters-Tanner Foust-is an extremely skilled driver. In the video below, Foust gets into a modified Polaris Slingshot and absolutely flies through San Diego. The Slingshot was built specifically for the video by a shop called SlingStreet in Florida that added a turbocharger to the 2.4-liter EcoTec engine for a total of 400 hp. That's a lot of power for one wheel to handle and, as Foust shows us, the three-wheeler can roast it's rear tire with ease.

The Slingshot is awesome when stock, but we're glad someone has made a 400-hp version. Check out the video to see why.