Automakers scramble to keep up with 'clunkers' demand

The Obama administration's "cash for clunkers" program has gotten the U.S. auto industry off its deathbed.

The program, which gives people up to a $4,500 incentive to exchange their old gas guzzlers for new, fuel efficient models, is more popular than officials imagined in their wildest dreams.

Therefore, U.S. automakers are doing something unthinkable a few months ago -- increasing production -- as dealers report shortages of some models. Spurred by the huge popularity of the program, Congress recently added another $2 billion to it after the first $1 billion allocation was exhausted.