Rahal Letterman Lanigan Racing INDYCAR Grand Prix of Indianapolis Verizon IndyCar Series RAHAL AND SATO FINISHED NINTH AND TENTH IN THE INDYCAR GRAND PRIX AT INDIANAPOLIS MOTOR SPEEDWAY GRAHAM RAHAL, No. 15 United Rentals Dallara/Honda/Firestone:  “We had a pretty good car on the reds and were able to get the United Rentals machine up to…