Philip Greenspun’s Weblog » Cash for Clunkers
November 11 2009, 11:03am
Consider that a person who has a car worth $4500 has a limited budget for gasoline. If you give him a car that uses half as much gas per mile driven, he may simply drive twice as many miles.
Via: http://blogs.law.harvard.edu/philg/2009/08/07/cash-for-clunkers/
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