America’s love of gas guzzlers is hampering progress on fuel economy By: MarketWatch January 20, 2017 at 12:55 PM EST Six out of 10 new vehicles sold in the U.S. are pickup trucks, a reason why fuel economy gains have grown at a snail’s pace. Read More >> Related Stocks: Cvr Refining LP Hollyfrontier Corp Marathon Petroleum PBF Energy Inc Par Pacific Holdings Inc Phillips 66 Standard & Poors 500 Tesoro Petroleum Co Valero Energy