In 2008 , the IndyCar Series merged with the Champ Car World Series ( formerly CART ) .
Its parent company began in 1996 as a competitor to CART known as the Indy Racing League ( IRL ) which was created by then Indianapolis Motor Speedway owner Tony George .
In 2008 , the IRL   merged with the CART       ( formerly CART ) .
Its parent company began in 1996 as a competitor to CART known as the Indy Racing League ( IRL ) which was created by then Indianapolis Motor Speedway owner Tony George .