A program that paid Americans to buy new vehicles with higher fuel economy lifted sales for automakers.

VOA: special.2009.11.06

So, fuel economy and environmental conservancy make a lot of sense if you care about such things, of course.

所以，油价和环境保护,是很有意义的,如果你关心这样的事，当然会更好。

麻省理工公开课 - 固态化学导论课程节选

Clearly, if I did nothing more, but I took every car, doubled its fuel economy, its emissions would go to 50% of what they are now, no other changes being made.

显然，如果我什么也不做，但是我把没量车的汽油价加倍，汽车废气排放量就会是现在的一半了，别的不会有什么改变。

麻省理工公开课 - 固态化学导论课程节选

And,of course, its products must satisfy the public, as well as new government rules for fuel economy.

VOA: special.2009.06.05

And here is at least part of the reason why: Since late July the government has been paying for people to trade in older vehicles for newer ones with greater fuel economy.

VOA: special.2009.08.07

But,as factory bosses are forced to offer higher pay to prevent strikes, (what does this mean for the faltering global economy?) The West has relied on cheap goods from China to help fuel the boom times of the past two decades.

VOA: standard.2010.06.24