Hybrid electric cars -- United States. : Hybrid cars : increasing fuel efficiency and reducing oil dependence : hearing before the Subcommittee on Energy and Resources of the Committee on Government Reform, House of Representatives, One Hundred Ninth Congress, second session, July 20, 2006.
Hybrid electric vehicles. : The Complete Idiot's Guide to Hybrid and Alternative Fuel Vehicles / by Jack R. Nerad.
2007
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Hybrid electric vehicles -- Government policy -- United States. : The Plug-In Hybrid Electric Vehicle Act of 2006 (discussion draft) : hearing before the Subcommittee on Energy, Committee on Science, House of Representatives, One Hundred Ninth Congress, second session, May 17, 2006.
Hybrid electric vehicles -- Technological innovations -- United States. : Hybrid technologies for medium to heavy-duty commercial trucks : hearing before the Subcommittee on Energy and Environment, Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, second session, June 10, 2008.
Hybrid electric vehicles -- United States -- Cost effectiveness. : Hybrid technologies for medium to heavy-duty commercial trucks : hearing before the Subcommittee on Energy and Environment, Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, second session, June 10, 2008.
