The sound of dirt thirsty horsepower raging through the turns and romping full stomp over the jumps is quite thrilling from the grand stands and upon the television screens. But what goes on behind the wheel often produces a pucker factor that is tough to describe with mere words.

John Harrah gets the jump on Adrian Cenni during the Lucas Oil Off Road Racing Series (LOORRS) Pro 4 Unlimited off-road truck race in Las Vegas, Nevada. The 2010 LOORRS season opener featured fierce competition.

With a stomp on the throttle and some strategic steering through the army of trucks that took the green flag, Chuck Dempsey delivered a powerful performance for his first time behind the wheel of the new Speed Technologies Pro 2 Unlimited Truck and its debut at the Lucas Oil Off Road Racing Series season opener in Las Vegas.

Chuck Dempsey charges toward the podium during a recent round of Lucas Oil Off Road Race Series (LOORRS) off-road racing action for the January 2010 Speed Technologies Desktop Wallpaper Download.