2018 Hummer H1 is a civilian off-road vehicle based and created by AM General. It was initially known only as the Hummer However, in 1999, a joint venture between General Motors and AM General. It was at this point that the original Hummer was given the H1 designation. For collectors, the model is most desirable 2018 H1 Alpha, produced in the final model year. It had the most powerful engine and better fuel consumption H1 vehicles. Overall, the 2018 H1 was a very limited production vehicle. Originally designed exclusively for military use, the four-wheel utility vehicle was released to the civilian market due to strong demand.