sentences:  In the US’s involvement in the Vietnam War, the Goer developed a reputation of being able to go where other trucks could not, and it was one of the preferred resupply vehicles after the pre-production units' introduction in 1966.They achieved a 90% availability rate even though spare parts for the Goer were not an official part of the US Army inventory until 1972.Nevertheless, the vehicle's lack of suspension made it too bouncy on hardened surfaces, making most drivers shy away from its 31 mph (50 km/h) top speed.