It was all "Fireball" Roberts in a Pontiac, owned & prepared by Smokey Yunick! He won the pole, his twin qualifying race and the Daytona 500 to sweep speedweeks and end his Daytona jinx. He had been disqualified from his 1955 Beach/Road course win. In the 1959 Daytona 500 he had won the pole and led 21 laps when his fuel pump died. In 1960 he won his qualifying race. In 1961 he won the pole, his qualifying race and led the 500 until his engine blew with 13 laps to go.
To learn more, go to Wikipedia article.
To learn more about Glenn "Fireball" Roberts, go to Mac's Motor City Garage.