United States Hot Rod Association

The United States Hot Rod Association (USHRA) was an organization that sanctioned various motorsports.

Having passed through multiple owners, the rights to the group are now owned by Feld Entertainment,[1] which continues to operate the Monster Jam series.

The USHRA was founded as "Truck-O-Rama" in the late 1970s by Bob George, Ed Thayer, and Tony Vaccaro.

The early events focused on tractor pulling and mud bogging, and were primarily held in stadiums and arenas.

Popular pullers included Art Arfons, who competed with the "Green Monster" unlimited tractor, David Willoughby, who pulled with his reputable "Back in Time" modified four-wheel-drive truck, Kenneth and Paula Geuin's Black Gold and Oklahoman four-wheel-drive trucks, Allen Gaines, who had an entire fleet of "Orange Blossom Special" truck pullers, and Gary Collins and his "Budweiser Boss" semi-truck.