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Indianapolis Motor Speedway is the oldest surviving automotive race track in the world, having been in existence since 1908.
During the '50s, the track got enough of a reputation that it made the Indy 500 a Formula One event for 11 years (1950-1960), even though most of the drivers never raced abroad, and most Europeans at the time never raced there (Alberto Ascari was the only driver to do so).
The Speedway in the '70s was becoming much more than a race track, as it began to feature a pair of golf courses and even included a hotel.