In 1981 at the Indianapolis 500 Danny Ongais was involved in a very serious accident on lap 63. Ongais came into the pits on lap 63 as the leader of the race, but problems during the stop caused it to drag on for a disastrous 46 seconds. After finally leaving the pits, Ongais approached a slower car at the end of the backstretch. He made a late pass going into turn 3. Carrying too much speed out of the turn, the car drifted out into the grey and the back end began to slide. Ongais tried to correct the slide by turning right, and the car hooked to the right and crashed nearly head-on into the wall. He was knocked unconscious by the heavy impact. Officials had to cut open the car to help Ongais out. He was transported by an ambulance to a nearby hospital in a critical condition. By the time the broadcasting of the race ended at 11:30 PM, Ongais's condition had improved and his condition was updated to stable. He suffered a concussion, compound fractures in both legs, a broken arm and a 6-inch tear in his diaphragm. He missed the rest of the CART year to recover in rehabilitation.