The average price of a gallon of gasoline in the United States fell 14 cents in the past two weeks to its lowest level in seven years, according to a Lundberg survey released on Sunday. Regular grade gas fell to $1.91 per gallon in the Jan. 22 survey from $2.05 on Jan. 8, when the previous survey was taken. The price was the lowest since Jan. 23, 2009, when it was roughly $1.86, survey publisher Trilby Lundberg said. The latest price was 16 cents lower than a year ago as the continued plunge in crude oil prices drove gas prices lower, Lundberg said. She said, however, that the latest average gas price could mark a bottom if a rebound in crude prices that occurred on Friday continued. […]