Finding Fuel Economy: Visit this Web Site, from the U.S. Department of Energy, Energy Efficiency and Renewable Energy, to find and compare fuel-efficient cars and trucks, learn about hybrid vehicles and get fuel economy tips.
Pew Center on Global Climate Change: State level Actions with a searchable database of information regarding the Transportation Sector: Vehicle GHG Emissions Standards and Mandates and Incentives Promoting Biofuels.
Biofuels for Transportation: A Climate Perspective (PDF): June 2008. This 25 page white page from the Pew Center on Global Climate Change authored by Naomi Pena summarizes the current state of biofuels.
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