CAFE Footprint Formula Explained
Last week, the National Highway Traffic Safety Administration (NHTSA) announced its new formula to calculate fuel efficiency standards based on the footprint of vehicle lines—rather than a one-size-fits-all approach. The proposed rules mean that Porsche vehicles will have to reach 41.3 mpg by 2015, while Chrysler’s target is 33.6 mpg. HybridCars.com interviewed John DeCicco, senior fellow for automotive issues at Environmental Defense, to get a better understanding of the logic of the new rules.
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