Gas prices rocketed 64 cents in the last year to a national average of $3.20 per gallon of regular, CNN reports. A survey of prices at 5,000 gas stations found the highest price, $3.58, in San Francisco and the lowest, $2.99, in Cheyenne, Wyoming. The last two weeks alone saw an increase of 9 cents a gallon.
Increased demand will push prices up even further in the coming months, and a $4 gallon of gas is around the corner, according to the survey. "We should be ready to absorb even higher prices, and quickly—at least 20 to 30 cents at the pump, perhaps by mid-April," said the publisher of the survey.