Canadian Grand Prix 1958. (The American Indianapolis 500 formed part of the FIA World Drivers' Championship from 1950 to 1960, but was not run to Formula One regulations and only very rarely entered by regular championship competitors.) During the Australian Grand Prix, reports surfaced that the Canadian Grand Prix could return during the 2009 season in the event that the race circuit in Abu Dhabi was not ready in time. On 26 April 2009, Speed reported Bernie Ecclestone as saying the FIA was negotiating a return of the Canadian Grand Prix for the 2010 season, provided upgrades to the circuit were completed. On
1981 Formula One World Championship reasons: it was effectively the first season that Briton and Brabham team owner Bernie Ecclestone and FOCA had the Concorde Agreement in place, which would set Formula One on a course to become a profitable business, thanks to the growing professional involvement of outside companies and professional sponsorship. The South African Grand Prix, held on 7 February at the Kyalami Circuit near Johannesburg, was originally supposed to be the first round of the 1981 Formula One World Championship – but it was eventually stripped of its championship status. The ongoing FISA–FOCA war resulted in Fédération Internationale du Sport Automobile (FISA)