FedEx shipping empire faces a gathering storm

Next year will we all be getting our holiday packages delivered by drones flying out of driverless vans ?

Four delivery days left until Christmas and streets are jammed with brown UPS trucks. But by this time next year, will your friendly delivery person be replaced by a driverless car or a drone? Technology and new paradigms are shaking up the shipping industry and threatening to topple the dominance of the traditional giants, FedEx and UPS. Sarah Halzack, national retail reporter for the Washington Post, has been covering this story.