IHRA International Hot Rod Association, the junior sanctioning body for drag racing. IMSA International Motor Sports of America, the former name for the sanctioning body Professional SportsCar Racing. The camera inside the cockpit of a race car that gives a driver's perspective of the race. After the 1996 schism between the IRL and CART, both groups claim they race Indy cars, though they use different types of engines.
All racers have the same car.
The shortest line around the track also is the part of the track that is closest to the infield. Intimidator Seven-time Winston Cup champion, Dale Earnhardt IRL Indy Racing League, started in 1996 by Indianapolis Motor Speedway president Tony George. CART and the IRL have been feuding ever since, and the biggest name Indy car drivers have stayed away from the Indianapolis 500 since the split. IROC International Race of Champions, a racing series founded in 1973 by Roger Penske and Les Richter to pit racing's best open-wheel and stock car drivers against each other. Twelve drivers race identically prepared Pontiac Firebird TransAm sports cars in these four invitation-only races.