Nowdays, people are comming up a lot of new ideas to save the environment, including "green cars". Now let me explain what are exactly "green cars".Basically green cars, or Hybrid Cars are powered by the following:
Power sources include:
On-board or out-board rechargeable energy storage system (RESS)
Gasoline or Diesel fuel
Hydrogen
Compressed air
Human powered e.g. pedaling or rowing
Wind
Compressed or liquefied natural gas
Solar
Coal, wood or other solid combustibles
In fact none of these power sources are truly convenient.Also, when we use electricity powered cars, we may run out of electricity halfway and be stuck in the middle of a road.Also, when we charge our car battery in our homes we are still indirectly polluting the environmrent as our electricity supply are directly from power stations. And when we demand for more electricity, the power stations will need to burn more fuel and release more pollutants into the air.
In my opinion, I therefore think that Hybrid Cars are not very convenient and also more expensive and, will still pollute the environmemt. So I think that we should not depend so much on private transports but instead switch to public transports.
[Sources:http://en.wikipedia.org/wiki/Hybrid_vehicle
http://en.wikipedia.org/wiki/Green_vehicle]
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