Gas prices increase by nearly three times . Gas prices in this survey were nearly 28 cents higher than in December a year ago . A barrel of gas is nearly 28 % higher than last year . Prices could reach $ 100 per gallon by Christmas , survey publisher says .
Gas prices increase by nearly three times . A barrel of gas is nearly 28 % higher than last year . Prices could reach $ 100 per gallon by Christmas , survey publisher says .