Two event tickets for the Indy Grand Prix of Sonoma, August 24 and 25, 2013 (date is subject to change, check www.racesonoma.com for updates). This exciting weekend of open-wheel competition features the IZOD series with such drivers as Will Power, Marco Andretti, and Helio Castroneves to name a few. The weekend is also jammed packed with racing in Star Mazda, World Challenge, Formula Car Challenge and Historic Grand Prix series.