DrivingBus.com lists all information about auto parts, motorcycle, auto technology, transport, driving school & safety, accessories, auto loan, shows & events.

Government

Listings
Smog check information for California.
http://www.smogcheck.ca.gov/
Includes data, graphs and charts on nationwide transportation statistics such as motor carrier finances and fatal accident reporting.
http://www.bts.gov/
Department of Motor Vehicles guide - find every state's DMV information.
http://www.dmv.org
English and other versions available.
http://www.bmvbw.de/
The U.S. Department of Energy's premier Laboratory for renewable energy and energy efficiency research, development and deployment.
http://www.nrel.gov/