[arthurus]

There was a study sometime in the last twenty years that showed that CAFE standards so not reduce the use of gasoline but that, instead, people drive more because it's cheaper to drive. The cost in human lives and material damage is also higher with he cafe standards.People are also more apt to be driving two cars because the super fuel miser cars don't have enough room. As usual you have to look for the real reason for this sort of rule making. In part it is to push people out of cars altogether and into public transportation so that their movements can be more controlled and monitored. If fuel efficiency and pollution were the real reasons then we would be encouraging diesel which produces less "pollution" per mile than gasoline because it gets more miles per gallon even while producing slightly more "pollution" per gallon.

[Hugin]

There was also a study sometime back that a person riding a bicycle a mile expels more CO2 than a car.