The roughly 200 million automobiles and light trucks currently in use in the United States travel approximately 2.4 trillion miles every year, and consume almost two-thirds of the U.S. oil supply. They also produce about two-thirds of the carbon...

By incorporating into the driveline of the vehicle the capability to generate electricity onboard the vehicle from a chemical fuel, a hybrid-electric vehicle has the characteristics of both an electric vehicle and a conventional internal combustion...

A hybrid vehicle (HV) is a vehicle that uses two or more distinct power sources to propel the vehicle such...

by Robert Cravotta, Technical Editor Energy- and emission-efficient automobiles are increasingly relying on both combustion engines and electric motors for power. The term "hybrid automobile" has held a number of meanings. An early use in the United States meant a vehicle...

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Ford Motor Co. is joining the list of automakers working on a plug-in hybrid _ with a twist. It combines the convenience of plugging in your car with a zero-emissions hydrogen fuel cell.Ford on Tuesday is to display what it calls the world's first drivable...

The city's fleet of yellow cabs will go entirely hybrid within five years, and all its vehicles for hire will have to meet new emissions and mileage standards by next year, Mayor Michael Bloomberg announced Tuesday.Today, there are just 375 fuel-efficient hybrid vehicles among the...

Discusses the increasing popularity of hybrid vehicles and its relation to the environmental situation of the current world.