For a while there was a separate series of specifications for championship cars designed to be run on dirt, rather than paved, tracks. The "triple crown" is earned in USAC racing when a driver claims all three national championships silver crown, sprint car, and midget car. Only two drivers, Tony Stewart and J. Yeley , have achieved the triple crown in a single season. In Mike Curb and Cary Agajanian became the only car owners to win the triple crown by winning all three championships in the same year.
Swanson, Courtney and Seavey earned national championships. The award was presented for scoring the most National points combined in the three series. Also honored for their championships at Kutztown, Pa. Honored as USAC.
Sleepy Tripp won his first race in a quarter midget at Buena Park when he was 7, won his first United States Auto Club professional race in a full midget at 20 and won his first USAC national championship series at 21, but he says this year has been the most productive of his career. Tripp, 34, has won 28 main events, driving his midget racers primarily on the West Coast and in New Zealand and Australia. Tripp will close out his U. Next month, he will head for New Zealand for his eleventh season of racing down under.