Many international championships were added to the International calendar during the 70s, which spike interest on the sport globally. These, plus the existing championships were: Formula 1 – World Championship, South Africa (also included F5000 and F2), Aurora Championship + British Group 8 (which also included Formula 5000, Formula 2, even Atlantic early on) Formula 2 – European and Japanese Championships Formula 3 – British, European, German, French, Italian, Swedish championships Formula 5000 – American, European, Australian, New Zealand Sports cars: World Championship of Makes, World Sports Car Championship, DRM (also ran Touring Cars), European GT Championship, European 2 Liter Championship, IMSA, Trans-Am, Can Am, Interserie, PROCAR, Le Mans Touring cars: NASCAR, European Touring Car championship, Avenir Cup, USAC Stockcars Formula Atlantic: Canada, South Africa, Britain Formula Indy: USAC Championship Trail + CART Formula S...