Saturday 4th September 1915
The Twin City Concrete Speedway in Fort Snelling, Minnesota, US staged its first event, a 500-mile race won by Earl Cooper in a Stutz. The 2 mile concrete oval cost $900,000 to build, yet by 17th July 1917 it was already hosting its last race. The Twin City Aero Club then used the flat infield as a landing area, and in 1921 it was renamed Wold-Chamberlain after two local World War I pilots. It was developed into Minneapolis and St Paul’s International Airport.