HUMMER Company Description:Hummer is a brand of large off-road vehicles (H1) or sport utility vehicles (SUVs) (H2, H3, H4) sold by GM. They are based on the military High Mobility Multipurpose Wheeled Vehicle, or Humvee. In 1992, AM General began selling a civilian version of the M998 High Mobility Multipurpose Wheeled Vehicle to the public under the brand name "Hummer". The Hummer is one of the larger 4x4 types, with commensurate high fuel consumption. As of 2006, Hummer has gone international with selected importers and distributors in Europe and other markets. In most countries, a hummer is considered to be a truck, rather than a regular SUV as it does not meet environmental protection standards.