in which Petty is cast in the Pixar film Cars (2006), in which Richard and Lynda Petty had voice roles. The 1970s On February 14, 1971, Petty won his third Daytona 500, driving a brand-new (for 1971) Plymouth Road Runner and beating Buddy Baker, by little more than a car length en route to another historic year, making him the first driver to win the race 3 times. He won 20 more races (which would make him become the first driver to earn more than $1 million in career earnings) and claimed his 3rd Grand National Championship. At the end of the 1971 season, Chrysler told the Pettys they no longer would receive direct factory funding support; this gave the Petty team great concern. In 1972, STP began what would turn into a successful 28-year sponsorship arrangement with Petty, however, it marked the end of his famous all "Petty Blue" paint job. STP previously insisted on an all STP orangish-red color for the cars, but Petty balked and after an all-night negotiation session, the familiar STP orange/"Petty blue" paint scheme was agreed to as a compromise that would later become part of STP's motorsport paint schemes, most notably Gordon Johncock's win in the 1982 Indianapolis 500 (where the car had a primarily "Petty Blue" scheme). Thanks to his 28 Top 10 finishes (25 Top 5 finishes and 8 victories), Petty went on to win his 4th NASCAR Cup Series championship. 1972 was a year of change in other ways, as it was the last year where Petty would campaign a Plymouth-based race car; as in the middle of the year, he debuted to drive a newly built 1972 Dodge Charger in a few races (winning one of them), as he believed that the car would have a slight aero advantage over the Plymouth body style. In a driver's duel on February 18, 1973, Petty, in a newly built 1973 Dodge Charger (a body style he would use exclusively until the end of 1977), outlasted Baker (now with the K&K Insurance Dodge race team) to win his 4th Daytona 500 after Baker's engine gave out with 6 laps to go. A year later, Petty won the Daytona "450" (shortened 20 laps {50 mi/80 km} due to the energy crisis) for the fifth time en route to his 5th Winston Cup Championship. 1975 was another historic year for Petty, as he won