IRL IndyCar Series
Dario Franchitti (GBR) Andretti Green Racing Dallara Honda, leads Sam Hornish Jr. (USA) Team Penske Dallara Honda, and Helio Castroneves (BRA) Team Penske Dallara Honda.
IRL IndyCar Series, Rd13, Firestone Indy 400, Michigan International Speedway, Michigan, USA, 3-5 August 2007.