In 2005, Wheldon won the Indianapolis 500. He finished the season first in points winning the IndyCar Series championship. He won six races during the season, breaking the record for most victories in one season. In November 2005, it was made known that Wheldon would be driving for Chip Ganassi Racing in the IndyCar Series in 2006. He went on to drive for Chip Ganassi Racing in the 24 Hours of Daytona, winning the race with Ganassi teammates Scott Dixon and Ganassi NASCAR driver Casey Mears.