 Some 70 years after Porsche's pioneering efforts in hybrid-drivetrain armored fighting vehicles in World War II, the United States Army's manned ground vehicles of the Future Combat System all use a hybrid electric drive consisting of a diesel engine to generate electrical power for mobility and all other vehicle subsystems.However, all FCS land vehicles were put on hold in the 2010 DOD budget.Other military hybrid prototypes include the Millenworks Light Utility Vehicle, the International FTTS, HEMTT model A3, and the Shadow RST-V.