How low can gasoline prices go?

After marching relentlessly higher this year, gasoline prices suddenly have made a sharp U-turn in the past few weeks. And analysts say consumers can expect even more relief at the pump in the coming weeks. ?Wholesale prices are down 70 cents since Aug. 7, and retail are down about 30 cents,? said Tom Kloza at Oil Price Information Service. ?It doesn?t take John Maynard Keynes to anticipate that we?ve got tens of cents of catching up to do.?