CBS has sold more than half its advertising inventory for the 2013 broadcast of Super Bowl XLVII in New Orleans, Advertising Age reports. CBS also could sell-out levels approaching 80% in the next few weeks, CBS EVP sports ad sales John Bogusz said. “We are over 50% sold in the game, and we have a number of active negotiations … that will get us closer to 80% sold,” he added — possibly in “a week or two.” Car advertising is driving the pace, notwithstanding GM’s recent decision to forgo Super Bowl ads next year.