Traxxas has a new app for the iPhone, iPad and iPod Touch called Traxxas Short Course Shootout. You can get this game at the App Store now.
From Traxxas:
Experience the thrill of short course racing with TRAXXAS Short Course Shootout! Select one of four tracks and race a Super Buggy, Pro Light, Pro 2WD or Pro 4WD. Or go head-to-head with other players in Match-Up Mode.