Interesting data point. Perhaps a bit more evidence of the real wealth flowing from low to high income Americans:

The proof is emerging in dealer showrooms, where customers are buying more of Detroit’s cars and paying higher prices. In July, G.M., Ford and Chrysler sold their vehicles at an average price of $30,400 — $1,350 more than a year ago and higher than an overall industry gain of $1,100, according to the auto research Web site Edmunds.com.