The High Mobility Multipurpose Wheeled Vehicle (HMMWV), commonly known as the Humvee, is a four-wheel drive military light truck produced by AM General. It has largely supplanted the roles previously performed by the original jeep, and others such as the Vietnam-era M151 jeep, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the Commercial Utility Cargo Vehicle (CUCV), and other light trucks. Primarily used by the United States military, it is also used by numerous other countries and organizations and even in civilian adaptations. The Humvee's widespread use in the Gulf War of 1991, where it negotiated the treacherous desert terrain, helped inspire civilian Hummer versions.
Since the WWII era Bantam Reconnaissance Car, the United States Army had relied on jeeps to transport small groups of soldiers. The jeep was built around a requirement for a compact vehicle with a folding windshield that was actually shorter than the Volkswagen Beetle. It seated three with a 660Â lb (300Â kg) payload and weighed just over one ton. By the 1970s, the U.S. Army had tried larger militarized civilian trucks, but even these no longer satisfied newer requirements. In 1977, Lamborghini developed the Cheetah model in an attempt to meet the Army contract specifications.