The auto industry has been investing heavily on the development of alternative fuel vehicles as the demand for these vehicles increases. The increasing prices of gasoline and global warming awareness have led car manufacturers to dedicate efforts in exploring the different technologies which can be used on cars of the future. These technologies are aimed at reducing petroleum fuel consumption and thus reducing the emission of greenhouse gases.

One of the car manufacturers aiming to build a zero-emission vehicle is the Detroit-based car manufacturing giant General Motors. In the company

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