The GM 04 Concept Car is a four- passenger convertible coupe, based on the German made Opel Astra chassis.

The vehicle was designed in the United States but crafted at the Bertone Design Studio in Italy. It features a 2-liter V-6 and offers many sleek lines and features.

Another model, the Precept is a fuel-cell electric car. On one single tank of gas, this automobile has a range of 500 miles, pulling in 108 miles per gallon. The technology behind this is an on-board hydrogen storage system, a breakthrough in the efficient storage and release of hydrogen to power a vehicle.

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