Gas prices have hit four-dollars and eleven cents on average nationwide as we start off the week. They were at three-32 a month ago, according to Triple-A. Nevada has now joined the list of states where a gallon of regular unleaded is going for five-bucks or more. Prices are still highest in California, at five-92 on average. Here at home the average cost of a gallon of regular is running at four dollars-19 cents.