Dario Franchitti, driver of the #10 Target Chip Ganassi Racing Dallara Honda, is showered with silly string after winning the IRL IndyCar Series Indy Grand Prix of Sonoma. (Photo by Darrell Ingham/Getty Images) hide

Dario Franchitti, driver of the #10 Target Chip Ganassi Racing Dallara Honda, is showered with silly string after winning the IR... more