In the 2000s, GM and AM General produced two 4x4-derived vehicles Chevrolet, GMC and Cadillac that bore no relation to the famous military HumVee. The more powerful of the two new vehicles was the H2, which was equipped with a V8 engine with various displacements ranging from 5967 to 6163cc (as of 2008). The H2 was a true all-terrain vehicle. Production of H2 was stopped in 2009.