FUEL-EFFICIENT VEHICLES

Fuel-efficient vehicles are extremely important. Because we need to cut our fuel consumption and find other ways of powering cars, fuel-efficient vehicles are now very popular. Check out these great fuel-efficient vehicle articles from HowStuffWorks.
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Are grease cars legal?

A grease car can save you a lot of money on fuel, but can it also cost you in fines from the government? Why would clean fuel get you into trouble?

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