FTC Automobiles - Automobile section of the Federal Trade Commission web site. A wide variety of resources on a wide range of auto related topics. Worth a visit if you own a car or are planning to buy one.
Highway Loss Data Institute - Nonprofit organization that gathers, processes, and publishes data on the ways in which insurance losses vary among different kinds of vehicles.
Motorvehicles.com - Links to the Department of Motor Vehicles web sites for 48 states and the District of Columbia.
NHTSA - National Highway Traffic Safety Administration - By far the most impressive of the Federal Government's auto related sites. Crash test data, recalls, service bulletins. Very important stop for anyone considering buying a new or used vehicle.
U.S. Department of Energy - Fuel Economy - Find cars that protect the environment and save you money; advanced technology, gas mileage tips, links, Q and A and car by car fuel ratings.