Richard Petty hit the outside wall hard and then the inside wall even harder, causing his car to flip. The rag Petty would put in his mouth came out, and was mistaken by ABC as a gruesome death. Petty was seriously injured, but survived. During the roll, Petty's head hit the track surface several times, causing NASCAR to mandate the use of the Petty-developed window nets. These remain in use today. 1975: The finish shook into a bizarre sequence. In the final twenty laps Benny Parsons and David Pearson went after the lead; they raced side by side into Turn One and hammered the wall. Bobby Allison, who'd been a lap down, unlapped himself and raced into the lead with Darrell Waltrip and Donnie Allison hot on his heels. Bobby led them to the win, his second of the season and first at Darlington since 1972. 1977: A crash with five laps to go set up a wild finish. Darrell Waltrip shot past Bobby Allison, who was driving in relief of his brother Donnie, and Richard Petty charged into the fray; they hit the line three abreast and Waltrip was declared the winner as the final laps ran under caution. 1979: In a race that was seen on ABC's Wide World of Sports, Darrell Waltrip and Richard Petty hooked horns in a memorable duel. The lead changed four times between them on Lap 365 and three times on the final lap; Waltrip prevailed over Petty when he cleared Petty in Turn Three and Donnie Allison tried to shoot the gap, instead getting hung alongside Petty. During the race, David Pearson made a pit stop, and thought the Wood brothers were going to change only two tires. With the lug nuts loosened all the way around, Pearson sped out of the pits after two tires had been replaced. The loose inside wheels flew off near the pit road, ending Pearson's day. A week later, Pearson and the Wood Brothers split, despite scoring 43 wins from 1972 to 1978 with the Virginia-based team. 1980: David Pearson was now driving for Hoss Ellington Racing's #1 car, replacing Donnie Allison for the 1980 season. Despite the fact that the race was plagued by constant rain, and incoming darkness (the track did not have lights installed until the 2004 Southern 500, which finished after darkness), Pearson dominated the race and won after the race was