The accident in Turn 5 happened when the car of four-time IndyCar champion Franchitti launched over Takuma Sato's and sailed into the fence. Debris was showered into the grandstand from both the cars colliding and the impact with the fence, and Franchitti's badly damaged car bounced back onto the track. E.J. Viso then hit Sato's car.
Parts and pieces from Franchitti's car flew into the grandstand. IndyCar said one series official was taken to a hospital to be treated for minor injuries, and Houston Fire Department spokesman Ruy Lozano said 13 fans suffered injuries, with two transported to hospitals.
Franchitti has two fractured vertebra that will not require surgery, a fractured right ankle, and a concussion. He will be held overnight at the hospital.
After the wreck, the caution came out to freeze the field, allowing Penske Racing's Will Power to win the race while halting Dixon's final attempt for a sweep of the doubleheader sweep.