With the flick of switch, the gas prices on an electronic sign at an Exxon station in Jersey City magically dropped 15 cents per gallon after a week of runaway gas prices. It wasn’t a sudden change in the commodities market or an influx of crude oil that dropped the price like it was hot. It was a demonstration by dozens of gas stations Friday of how much consumers could save if the state ended its ban on self service gas and allowed a hybrid system offering full- and self-service. The demonstration by the Fuel Your Way NJ coalition brought a little relief to price hike weary drivers and, orga…
