Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Usoro USHRA's Monster Jam, nke Feld Entertainment nwere ugbu a, bụ nke kachasị ugbu a, na-agagharị na United States, Canada na mpaghara ahọpụtara nke Europe. Ihe omume ndị ọzọ nke nnukwu ụgbọala na-agụnye Toughest Monster Truck Tour, Traxxas Moster Truck Tour, na Hot Wheels Monster Trucks Live.  Ajụjụ: Gịnị bụ nnukwu Monster Truck Series?
Usoro Monster Jam nke USHRA