Endurance racing is a grueling, often frustrating experience, but the rewards--when you get it right--are equally significant. Team Falken Tire gives us a look into what they're working on improving for the 2011 American Le Mans Series season with this video from the Sebring winter test session.

The car itself is already fast, according to drivers Bryan Sellers and Wolf Henzler--the problem last season was getting the tires to last at competitive pace through an entire 70-minute stint. That's where Falken comes into the mix, with new slick compounds and new team management.

Even if you're not into ALMS racing, the video is worth the three minutes for the sights and sounds of the 911 GT3 RSR being run flat out.