While better fuel-efficiency is good news for Americans' wallets and less driving good for the country's air, for its highways and mass-transit systems, it is something of a disaster.

虽然，更高的燃油效率能节省美国人的经济支出，少驾车也有利于改善美国的空气质量，但这对美国的高速公路和公共交通系统却可以说是一种灾难。

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Driving less and walking more.

少开车，多步行。

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We are sure that if there are fewer people driving, there will be less air pollution.

我们确信，如果开车的人少一些，空气污染就会少一些。

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Car-related businesses would also be affected because less driving translates into fewer oil and tire changes.

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In addition, Hurricane Sandy temporarily curbed consumption in the northeastern part of the country, not only due to less driving but thousands of canceled airline flights, he added.

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Driving the Cayenne S Hybrid is less like driving another Porsche than like driving other luxury crossovers.

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