Is Cash for Clunkers really driving efficiency?

It's not all small cars

According to the government, the Cash for Clunker program is moving people out of fuel inefficient clunkers into vehicles averaging 25 mpg. I guess the keyword is average.

While the government hasn't released its data on the Clunker program, it has offered a Top 10 list that highlights small cars and a few hybrid vehicles.

Finish: Is Cash for Clunkers really driving efficiency?