The idea sounded nice, but it was not hard to see the problems. If the government artificially raises the price of crappy old cars, it will create market for fixing up crappy old cars no one drives -- hardly an efficient public policy goal. (Last year Steven Levitt hypothesized that the program might actually increase the number of Clunkers on the road.) And if the program lasted for any extended period of time, the effects on income distribution would be tiny. Sure, the immediate beneficiaries would be the current owners (Blinder says most Clunker owners are downscale families). But, after the initial round of sales, the price of used cars would go up to reflect the government subsidy. That wouldn't exactly be a boon to the driving poor.
But, as near as I can tell, the Bill that passed the Senate avoids the big problems. Will Wilkinson and others have pondered some clever schemes for ripping off the federal government and destroying the environment at the same time, but I haven't seen one that will work. Why can't Will sell his fuel efficient Civic, buy a smoggy old truck, trade it to the government for $4,500, and buy a brand new car that pollutes more than the original Civic? Because your clunker must be "continuously insured and registered to the same owner for at least one year" to claim a voucher, and the window for the trade-ins only runs from July 1 to November 1, 2009. (On the other hand, the trade-in policy is so narrow and confusing that I'm not sure there'll be lines running around the block to take advantage of it.)
The main problem with the bill, I think, is one Ryan Avent latched onto last month: It's poorly targeted. You can trade in an SUV that gets 17 mpg and buy one that gets 19 mpg with a $3,500 helping hand from the federal government. On the other side of the docket, you can scrap your 19-mpg passenger car, buy a 30-mpg one, and get zilch. (Or maybe a thank you.) That's because the voucher benefits are all or nothing, depending on whether you cross the 18-mpg line.
Maybe there are some net gains for the environment in there. But the structure looks more like a gift to the auto industry than a gift to mother nature.
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