Joint effort by the U.S. DOE and EPA. New vehicle fuel mileage guide, gas saving tips, information on greenhouse gasses, advanced technology and an faq. http://www.fueleconomy.gov/feg/
Technical information on all aspects of automotive engine management. Includes fuel injection, ignition, sensors and actuators. Also contains a waveform library and e-mail helpdesk. http://www.auto-solve.com/