The Gumball Rally

The Gumball Rally is a 1976 film directed and cowritten by Charles Bail about a coasttocoast road race. It was inspired by the Cannonball Baker SeaToShiningSea Memorial Trophy Dash run by Brock Yates, which inspired several other films, including Cannonball and Cannonball Run, as well as the Gumball 3000 international race.

Source: Wikipedia