1916 CINCINNATI MOTOR SPEEDWAY
1916 was the year that the Cincinnati Motor Speedway opened for business, At two miles in length it was equal to the largest board track ever built.
The turns were banked at 17 degrees, It was reported that around 65,000 spectators attended one particular event on the 30th of May 1917. The event was a 250 mile race in lew of the Indy 500 which was dark due to WWI as indy was used as a aircraft repair facility