酒精燃料混合动力汽车——将酒精燃料和混合动力发动机相结合可降低二氧化碳的排放，然而蒸发性排放物仍是个亟待解决的问题

Ethanol-powered hybrid—— Combining ethanol-based fuels and hybrid powertrains cut carbon dioxide pollution, but evaporative emissions are still a problem

美国汽车制造商之所以在节油技术的运用方面反应比较慢，部分原因是他们不愿抛弃业已成熟的汽油发动机技术。

US carmakers have been slow to back fuel saving technologies. This is due, in part, to a reluctance to turn their backs on the tried and tested gasoline powertrain.