What was the military vehicle used in maximum overdrive?

The only one I can recall was the one with the M60 mounted which attacked the truck stop the people were barricaded in. That was the 274 Truck, Platform, Utility 1/2 Ton, 4x4, more informally known as the "Mule". It first went into service in 1956, and was phased out in the early 1980s.