GM Defense is the military product subsidiary of General Motors, headquartered in Concord, North Carolina. It focuses on defense industry needs with hydrogen fuel cell and other advanced mobility technologies. GM Defense projects include SURUS (Silent Utility Rover Universal Superstructure), an autonomous modular platform joint project with the United States Army.
ZH2 are modified Chevrolet medium and full size pickups modified for military needs. The ZH2, fitted with a hydrogen fuel cell and electric drive, has a stealthy drive system which produces a very low smoke, noise, odor and thermal signature. This allows soldiers to conduct silent watch and silent mobility missions on the battlefield.