Drivers speed around a banked track in America in a 500 mile race.
Full title reads: "America. 38 'Demon Drivers' compete for 'Speed King of America' crown in 18th 500-mile automobile 'Derby' & £10,000 (T/C obscures rest)"
United States of America.
Shots of motor racing cars starting a race from the grid. Various shots of this race. Shots of people in the Grandstand as the two man cars speed around.
The winning car pulls into the pits and the driver and co-driver are greeted and interviewed.
N.B. This might be the 1930 Indianapolis 500 mile race.