It's not enough to notice - in L.A., the average gallon of self-serve regular was $3.438 for the week ended today. That's down two pennies from the previous week, according to the federal government's latest survey. Wholesale prices fell a bit late last week, which probably accounts for the small drop. Nationally, pump prices hit an all-time high, at $3.103, as President Bush ordered U.S. agencies to look into cutting gasoline consumption and emissions.