 This accident was caught on film by the makers of the 1929 silent film "Speedway" and the horrific crash can be seen in the last reel.In the captured film, Spence's front right tire hits the inside wall, indicating the car has previously spun.The car then rotates counterclockwise, and the right side appears to hit a rut or indentation in the track, causing the car to flip, landing upside down.