But DHL and Amazon are not alone. As the Washington Post recently reported FedEx chief executive Fred Smith has been discussing the use of unmanned aircraft in backhaul shipping for some time. He’s not talking the small individual packages drone, though. Smith thinks future cargo planes will favor a "blended wing" design that looks like a cross between a traditional airliner and a stealth bomber, the Post article stated. Here we see a Boeing X-48C Blended Wing Body research aircraft.