Grains, cane, and automobiles tax incentives for alternative fuels and vehicles : hearing before the Committee on Finance, United States Senate, One Hundred Tenth Congress, first session, April 19, 2007

Alternative transportation fuels an overview : hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session April 18, 2007

Alternative fuels current status, proposals for new standards, and related infrastructure issues : hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session, May 8, 2007

Legislative hearing on discussion draft concerning alternative fuels, infrastructure, and vehicles hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session June 7, 2007

Review of DOE Vehicle Technologies Program management and activities : assuring appropriate and effective use of taxpayer funding : hearing before the Subcommittee on Energy and Environment, Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, second session, Thursday, July 26, 2012

Transportation's role in climate change and reducing greenhouse gases : hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Eleventh Congress, first session, July 14, 2009

Power play : Tesla, Elon Musk, and the bet of the century