Grand Prix of Sonoma - Indy Racing League August 24, 2007

It will be the best of both worlds for motor racing fans when the IRL IndyCar® Series and the Grand-American Rolex Sports Car Series converge on Infineon Raceway for a memorable weekend of racing. The IRL electrified the crowd with its debut at Infineon Raceway in 2005. And the 2006 event saw rookie driver, Marco Andretti get his first IRL win.

Official Website: http://www.infineonraceway.com/schedule/major_events/gp/