The Lundberg Survey says the average national price of a gallon of regular gas is $3.18 cents.
Billings, Mont., had the lowest average price among cities surveyed at $2.95 a gallon.
San Francisco, Calif., was the highest at $3.54.
The Lundberg Survey says the average national price of a gallon of regular gas is $3.18 cents.
Billings, Mont., had the lowest average price among cities surveyed at $2.95 a gallon.
San Francisco, Calif., was the highest at $3.54.