Alternative Fuels Data Center - Provides information on alternative vehicle fuels and transportation technologies and related legislation. The center also distributes the newsletter "Biofuels News."

Columbia Plateau Clean Cities Coalition - Provides definitions, descriptions and benefits of a variety of alternative fuels.

Fuel Consumption Converter. - International fuel consumption converter, kilometers per liter to miles per gallon.

Gas 2.0 - Biofuels blog provides news, opinion, and in-depth objective analysis about ethanol plants, DIY biodiesel, car hackers, energy legislation, cellulosic and algae biofuels. Aimed at both technically-minded and novice readers.

Gasoline FAQ - Answers to nearly every gasoline-related question which can be asked.

HowStuffWorks: How Gasoline Prices Work - Information on what drives the price at the pump, with pictures and related links.

Tips to Improve Gas Mileage - Provides 12 fuel economy tips.

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.