Average price of US gasoline spikes 10 cents per gallon, San Francisco prices highest in the nation

The average U.S. price of regular-grade gasoline has spiked 10 cents per gallon over the past two weeks to $2.73. Industry analyst Trilby Lundberg of the Lundberg Survey says Sunday that jump results mostly from a drone attack this month on Saudi Arabia's key oil processing facility. The attack briefly slashed the nation's crude production in half before being restored.