HOW HYBRID CARS WORK  http://auto.howstuffworks.com/hybrid-car.htm

Adding Lithium Ion Batteries  http://www.edrivesystems.com/

Compare Hybrids Cars http://www.fueleconomy.gov/feg/hybrid_sbs.shtml

AZ Propane Gas Association    http://www.propaneaz.org/

EV World                                       http://www.evworld.com/index.cfm 

Electric Drive Transportation Association   http://www.electricdrive.org/

Fuel Cell Developments            http://www.fuelcelltoday.com/online/news

National Biodiesel Board                http://www.biodiesel.org/

National Ethanol Vehicle Coalition   http://www.e85fuel.com/index.php

Natural Gas Vehicle Coalition           http://www.ngvc.org/

National Hydrogen Association        http://www.hydrogenassociation.org/

National Propane Gas

Association               http://www.npga.org/i4a/pages/index.cfm?pageid=1

Larsen RADAX Engine (Hydrogen)
http://www.hydrogencarsnow.com/blog2/index.php/hydrogen-cars/larsen-radax-hydrogen-internal-combustion-engine-video/

Project Better Place   http://www.betterplace.com/