. . . . . . . "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"@en . . . . . "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"@en . . . . . .