Johnny Rutherford in Jim Hall's Chaparral 2K ground effects chassis dominated the season. Rutherford won five races, including a dominating performance at the 1980 Indianapolis 500. Rutherford finished in the top five in the first ten races, pulling out to a commanding and unmatchable points lead. Rutherford started the season out by finishing 1st or 2nd in the first six races, and ended with a total of eight finished of 1st or 2nd. Rutherford's season was not without incident, however. In the final race of the season at Phoenix, while battling Tom Sneva for the lead, Rutherford tangled with a lapped car, hit the wall, then flipped over. The car landed upside-down hard on its rollbar, but Rutherford was not seriously injured.