"It's becoming increasingly clear how serious Amazon is about using drones to create an autonomous Prime Air delivery network. The latest bit of evidence pointing to a human-free parcel delivery system is a new patent Amazon filed for a beehive-like fulfillment center.
Amazon's existing network of fulfillment centers, where packages are stored, sorted, and shipped out, take the form of huge warehouses covering large areas of land. That means they can't be located in densely populated areas, which just so happen to be where most of Amazon's customers reside." - PC Mag