Steel Axle Tube Wide 5 35in on 2040-parts.com

Video shows Audi R18 'long tail' e-tron quattro's blistering Monza run

Audi has had a pretty solid run at the 24 Hours of Le Mans over the past decade, but we're glad they keep pushing the envelope. That's how they keep devising road-going spaceships like the staggeringly fast R18 e-tron quatto equipped with a “long tail” aerodynamic package. This quick video of the “long tail” hybrid testing at Monza gives us a preview of what we can expect at Spa next month -- and hints at what we'll see at Le Mans in June.

New Porsche 911 GT3 RS ready for work, play

So you want the daily commute to be as much fun as a track day, and to be as confident on the track as during the drive to and from work? Porsche has the car for you. The German automaker has readied the RS version of the 2010 911 GT3.

McLaren reveals unique X-1 concept at The Quail

McLaren introduced a one-off supercar at The Quail on Aug. 17. It's named the X-1 and was built for an anonymous car enthusiast.