They won't run out of gas, nor will there be a shortage. Most people use public transportation to begin with, second, most goods are carried by rail not truck and gas prices have been rising not due to a higher demand but due to a higher price of oil per barrel.
Holy Crusader RussianConservative defends price controls? No, you wouldn't do that. Oh wait, I forgot, you are a protectionist so you would. Down with big oil! Soak the rich! Down with Boosh!