Original: In 1998 General Motors purchased the brand name and marketed three vehicles : the original Hummer H1 , based on the military High Mobility Multipurpose Wheeled Vehicle ( HMMWV , or Humvee ) , and the Hummer H2 and the Hummer H3 models that were based on other , smaller civilian-market GM platforms .
Simplified: The design of the Hummer H1 is based on the military High Mobility Multipurpose Wheeled Vehicle ( HMMWV -- Humvee ) .