Now is not the time to buy a Hummer. The average price of gasoline in California rose to $4.65 on Sunday—84 cents higher than the national average. Gas prices in the state have been on the rise all week and jumped almost 20 cents to $4.49 on Friday, then continued increasing Saturday and Sunday. California often has gas shortages at this time of year, as refiners switch to fall gasoline blends to meet state pollution standards. But this year, rationing has caused gas stations to close pumps, created gas lines, and pushed prices above $5 in some areas of the state.