$4 a gallon gas? Not as unlikely as you might think

By Kevin G. Hall
McClatchy Newspapers

WASHINGTON - The last time gasoline prices approached $3 a gallon nationwide, hurricanes had ripped apart the Gulf Coast oil infrastructure and world oil supplies were stressed. Today, oil supplies aren't pinched, but rusty U.S. refineries aren't producing enough gasoline to meet demand, which is driving up pump prices ahead of summer's peak driving season, and some fear $4 a gallon gas looms soon.