<P> On the final lap of the 500 , race leaders Cale Yarborough and Donnie Allison collided with each other on the Daytona International Speedway 's back stretch . Both drivers ' races ended in Daytona 's grass infield . The wreck allowed Richard Petty , then over one - half lap behind both , to claim his sixth Daytona 500 win . </P>
<P> On the final lap of the 500 , race leaders Cale Yarborough and Donnie Allison collided with each other on the Daytona International Speedway 's back stretch . Both drivers ' races ended in Daytona 's grass infield . The wreck allowed Richard Petty , then over one - half lap behind both , to claim his sixth Daytona 500 win . </P>
who won the 1979 daytona 500 in a cutlass
who won the 1979 daytona 500 in a cutlass
Richard Petty
Richard Petty