Indy car is open wheeled racing in vehicles that resemble F1 cars.
Alternate names: American Championship Car Racing, ACCR
The first video game about Indy car was released on October 1977.
Indy car and Formula One did originate from the same design. But F1 cars became lighter, more agile, and increasingly high-tech while Indy car cars got bigger, heaver, and faster. Indy cars are also optimized for Oval track racing. Indy cars are also much cheaper to manufacture and maintain.