Scholars from USC and other leading universities conclude that rules on the books to increase fuel economy for passenger vehicles will do more good than harm. They found the analysis overlooked 6 million used cars, wiping out benefits estimated at least $112 billion.

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Scholars from USC and other leading universities conclude that rules on the books to increase fuel economy for passenger vehicles will do more good than harm. They found the analysis overlooked 6 million used cars, wiping out benefits estimated at least $112 billion.