Truck racing is a form of motor racing which involves modified versions of heavy tractor units on racing circuits.
The sport started in the United States at the Atlanta Motor Speedway on June 17, 1979 and was the opening scene in the movie Smokey and the Bandit II. As a sanctioned sport it began as ATRA (American Truck Racing Association) in 1979 then was sold to N. Linn Henndershott in 1982 and it became the Great American Truck Racing circuit. The races were run on dirt and paved ovals mostly in the Eastern United States. The trucks used in the beginning were actually working trucks with tandem rear axles and used street tires yet still attained speeds of 150 mph (241 km/h) on the front straight at Pocono Raceway and set the closed course record of 132 mph (212 km/h) in qualifying atTexas World Speedway by Charlie Baker on March 21, 1982.