 By a voice vote, the United States House of Representatives approved the ( for heavy duty plug-in hybrid vehicles) authored by representative James Sensenbrenner.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.