How Do Hybrid Vehicles Work?
Two or more power sources, such as gasoline and electric batteries, are used to extend gas mileage and reduce emissions. The desired net effects are to lessen the impact that our cars and trucks have on the environment, reduce dependence on foreign oil, and save money for the owner of the vehicle.

Today's hybrids are primarily gas and electric, but future models may utilize hydrogen or pure ethanol.

Generally, today's models run on electric power during stop-and-go city driving, and electric power out on the highway. The batteries are recharged during highway driving and during braking. The cost of a hibred vehicle is generally only slightly more than the same model offered as a non-hybrid.