In the late 1970s, people started to modify their trucks. They also began to compete with one another to see who could build the biggest truck. Modified pickup trucks soon became popular and so did the sports that were associated with it, including truck pulling and mud bogging. It is widely believed that the first monster truck show occurred in 1981, when Bob Chandler added 48-inch tires to his truck named “Bigfoot” and drove it over dilapidated cars. Nowadays, any truck with over-sized tires is generally referred to as a monster truck.
Grave Digger was the first monster truck to gain any recognition following Bigfoot. This green and black truck became the poster truck for Monster Jam, a live motorsport event that is held year round. Dennis Anderson helped to increase the sales of Monster Jam tickets with the creation of Grave Digger. He also pioneered what’s known as the “freestyle” version of monster truck competition.