CAMARILLO, Calif. (AP) — The average U.S. price of regular-grade gasoline plunged 32 cents over the past two weeks to $4.54 per gallon. Industry analyst Trilby Lundberg of the Lundberg Survey said Sunday that the continued decline comes as crude oil costs also fall. “Further drops at the pump are likely as the wholesale gasoline price cuts continue making their way to street level,” Lundberg said in a statement.