The Indianapolis 500 was designated a Grand Épreuve along with one of the oldest motor races in what?
1924 Grand Prix season The 1924 Grand Prix season again saw Grand Prix motor racing in Europe and North America. The Indianapolis 500 was again designated a Grand Épreuve by the International Sporting Commission of the AIACR, along with the French Grand Prix, held in Lyon and the Italian Grand Prix at Monza. The French Grand Prix was also this year's European Grand Prix.
1983 CART PPG Indy Car World Series The 1983 CART PPG Indy Car World Series season was the 5th national championship season of American open wheel racing sanctioned by CART. The season consisted of 13 races. Al Unser, Sr. was the national champion, and the rookie of the year was Teo Fabi. The 1983 Indianapolis 500 was sanctioned by USAC, but an arrangement was made such that it counted towards the CART points championship. Tom Sneva won the Indy 500, after three previous runner-up finishes.