Remember "cash for clunkers," the program that subsidized Americans to the tune of nearly $3 billion to buy a new car and destroy an old one? Transportation Secretary Ray LaHood declared in August that, "This is the one stimulus program that seems to be working better than just about any other program."

If that's true, heaven help the other programs. Last week U.S. automakers reported that new car sales for September, the first month since the clunker program expired, sank by 25% from a year earlier....