That is a staggering outlay, but it would free up American natural gas, which now generates 22% of the country’s electricity, to be used for motor vehicles.

这是一项巨大的支出，但它将会节省用来生产占国家电力22%的天然气，从而将之用于天然气汽车。

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One experimental clean-energy car runs on natural gas. Another USES ethanol distilled from corn. A third has a zero-emissions electric motor powered by a hydrogen fuel cell.

一辆尚处于实验阶段的清洁能源汽车依靠天然气行驶。另一辆使用从谷物蒸馏而来的酒精。第三辆则装有由氢燃料电池提供能量的零排放发动机。

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Therefore, the natural gas vehicle fuel than the ordinary (such as petrol or diesel) motor vehicle emissions of carbon monoxide is much lower.

因此，天然气汽车比使用普通燃料（如汽油或柴油）汽车的一氧化碳排放量要低得多。

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It develops anaerobic digesters that convert organic waste into biogas used to generate electricity, heat, natural gas and motor vehicle fuel (CNG). quasar already operates eight facilities in Ohio, and several more are in process in the Buckeye State and elsewhere.

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PowerBox Concept hybrid, for example, shown at the L.A. show, looks a lot like a standard sports utility vehicle (SUV) but combines a supercharged V-6 engine that runs on compressed natural gas and an electric motor that provides added power for acceleration and passing.

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And again, the potential for natural gas as a transportation fuel, and the revolution in natural-gas production, undermine the economics of renewable motor fuels.

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