Burger King is looking to knock off a couple of objectives with its new promotion stunt. The fast-food brand is encouraging stranded travelers to call up their mobile app (Objective #1: prompt new app downloads) and enter their flight information on the “Delay Your Way” screen to get a coupon for its new, meatless burger item (Objective #2: introduce its Impossible Whoppers to customers). The offer is good from Dec. 18 – 30 for travelers using any U.S. airport.