Cannonball, also known as Carquake, is a 1976 film starring David Carradine. The film is one of two released in 1976 (the other being The Gumball Rally) that were based on a real illegal cross-continent road race that took place for a number of years in the United States. The same topic later became the basis for the films The Cannonball Run and Cannonball Run II. The movie was written and directed by Paul Bartel, who also directed Death Race 2000.

The name of the film and the plot were inspired by Erwin G. "Cannon Ball" Baker, (1882-1960), who travelled across the USA several times, and by the Cannonball Baker Sea-To-Shining-Sea Memorial Trophy Dash, an illegal cross-continent road race introduced by Brock Yates to protest against the 55 MPH speed limit.

This is another story of the secret Coast to Coast auto race across America The only rule is, the first to finish is the winner. Naturally, anyone driving 55 isn't going to win. They'll need to drive a little faster than that. Well actually, they will need to drive a LOT faster that 55. Written by Brian W Martz