Hybrid cars like the Toyota Prius are using revolutionary technology to make hybrid cars that are more fuel-efficient and environment-friendly over cars run on internal combustion engines alone.

Hybrid technology is powering combustion-electric vehicles that use gas or diesel fuel, as well as electric power to augment the propulsion system. This results in reduced fossil fuel consumption and minimized toxic-fume-emissions.

The Power Source

Hybrid vehicles run on gas engines but are complemented by plug-in or unplugged rechargeable electric grids. They can run on petroleum-based engines alone, or rely on electrical power for shorter trips. A generator that recharges the battery feeds the electric motor.

Even the braking system is integrated in order to capture kinetic energy generated by the braking process momentum, which in turns re-charges the battery.

Most of the hybrids are gasoline-based although diesel hybrids are now available. Mass-transit diesel hybrid buses have proved to be more economical and eco-friendly to run as they combine the consistent power of diesels over long distances with electric hybrid technology.

Early Models

Hybrid technology shot to prominence when Honda came out with its Insight hybrid and Toyota its Prius. The technology allows faster acceleration and high RPMs without draining one's gas tanks by using direct contact from the combustion engine to the electric generators to the vehicles' wheels.

Hybrid car manufacturers have been continuously improving hybrid fuel efficiency and emission levels as consumers demand higher 'miles per gallon' ratings and the EPA better environmental ratings.

Consumer expectations of hybrid cars now also include safety, roominess, comfort and high-tech amenities.

Continuing Hybrid Innovation

After the Prius came the Camry Hybrid which uses the same Toyota hybrid synergy drive (HSD) technology. Power comes from a 6-speed auto-transmission which enables it to go from zero to 60 mph in less than a tenth of a minute. EPA ratings of 33 and 34 mpg for city and highway drive have been reached in Toyota's test drives.

Toyota, together with other hybrid car manufacturers, continue to innovate on hybrid technology and other concept cars that will run on biofuels, alternative and renewable energy sources, electric power, and hydrogen fuel cells. They are trying to answer questions for cars of the future such as:

* Can fuel efficient cars also be good looking?

* Will car lovers who are used to high speeds and agility go for seemingly sluggish hybrids? And the answer seems to be that they will, when the hybrids start reaching greater accelerating and cruising powers.

* Is the world ready for these fuel-efficient, clean and green cars?

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