Alternative Fuels Data Center - Provides information on alternative vehicle fuels and transportation technologies and related legislation. The center also distributes the newsletter "Biofuels News."
Tony's Guide to Fuel Saving - A professional engineer's skeptical view of many of the "miracle" fuel saving devices. Also includes gas economy measures and general car information.
Uncle Mark's Alternative Fueling Station - Alternative motor vehicle fuel FAQs, detailed background information on the subject, and reports on developments in the alternative-transportation marketplace.
U.S. Department of Energy: Fuel Economy - Find cars that protect the environment and save you money. Information on advanced technology, gas mileage tips, links, and car by car fuel ratings.