Cars of Limited Interest to Younger Americans

Why burn gas when you can send a text message?

America's young people just aren't buying cars like they used to.

The share of new cars purchased by those aged 18-34 dropped 30% in the last five years, according to the car shopping web site Edmunds.com.

Some say the economy is mostly to blame -- that the young aren't buying because they've been particularly hard hit by the recession.

But others say the trend could be part of larger social shifts.