L.A. gas prices tumble a whole 0.005 cents per gallon

Don't spend it all in one place - an average gallon of regular in the L.A. area fell ever so slightly in the last week, to $4.288, according to the government survey. Might not seem like much, but it's the first time that prices have fallen since Nov. 29 - and most likely they will continue to trend downward, provided that the price of oil doesn't resume its climb. How far will gas fall? The prediction du jour seems to be 50 cents a gallon by summer. But given the market volatility, that's little more than a guess.