Grassolean: Check out this site for information on veggie-based fuels.

Green Car Congress: This site provides information about the technologies, issues and policies of alternative fuels.

Greenercars.org: This site gives lots of great information about the American Council For An Energy-Efficient Economy's efforts to make cars greener.

HybridCars.com: Check out this site for the latest information on hybrid cars.

National Biodiesel Board: Use this site to find a directory of biodiesel stations across the United States.

U.S. Department of Energy Alternative Fuels Data Center: This site offers information on alternative fuels.

U.S. Department of Energy Fuel Economy Information: Compare the fuel efficiency of different model cars and learn more about saving fuel at this site.

U.S. Environmental Protection Agency Green Vehicle Guide: Check out this site to learn about eco-savvy vehicles.