News release: "In response to Chairman Waxman’s inquiry, EPA provided analyses EPA had conducted of reductions that would be necessary from the transportation sector to meet a range of global warming goals."

• The Potential Energy and GHG Implications of Plug-in Hybrid
  Vehicles: A Scenario Analysis, 2008 - SAE Government/Industry Meeting, U.S. EPA, May 14, 2008
  
• Related postings on climate change