The IndyCar Series, known as the NTT IndyCar Series is the premier level of American open wheel racing. The current series was founded by Indianapolis Motor Speedway owner Tony George. It began in 1996 as a competitor to CART known as the Indy Racing League (IRL). In 2008, the IndyCar Series merged with the Champ Car World Series (formerly CART). The series continues to be sanctioned by the Indy Racing League, which has taken the name IndyCar. In 2019, the series was purchased by Roger Penske.