A safety team works to remove Dario Franchitti from his car after a high-speed crash at the IndyCar Grand Prix of Houston Sunday. The driver was hospitalized with a fractured spine and other injuries. Juan DeLeon/AP hide caption

itoggle caption Juan DeLeon/AP

The car of driver Dan Wheldon bursts into flames during the Las Vegas Indy 300. Wheldon, 33, was killed.

Robert Laberge/Getty Images hide caption

itoggle caption Robert Laberge/Getty Images