How Long Before America Hits 'Peak Car' For Real?

Economists, scientists and titans of industry often talk about "peak oil," the idea that one day we'll reach a point where oil supplies begin to decrease and will never rise again. But what about "peak car"? A new study argues that while the peak in cars on U.S. roads may be temporary, the peak in the number of cars… » 6/20/13 2:47pm 6/20/13 2:47pm