We Were Warned : Out of Gas

What if a hurricane wiped out all the oil refining facilities in Houston, Texas, and at about the same time Al Qaeda attacked oil production in Saudi Arabia's main facility? At a time when gas prices are higher than they've ever been, CNN Special Investigations Unit explores a hypothetical scenario, but one intelligence experts tell us they are preparing for, about the vulnerability of the world's oil supply.  Producer Emily Probst secured an interview with former CIA Director James Woolsey at his Maryland home.  Probst also produced segments on the growing demand for oil in China and the questionable world supply in oil powerhouses like Saudi Arabia.