The world's largest retailer has applied for a U.S. patent for a floating warehouse that could make deliveries via drones, which would bring products from the aircraft down to shoppers' homes.
The blimp-style machine would fly at heights between 500 feet and 1,000 feet (as much as 305 meters), contain multiple launching bays, and be operated autonomously or by a remote human pilot. Amazon was granted a patent for a similar vessel in April 2016.
The migration to the skies represents the latest volley in a clash between Wal-Mart and Amazon to grab shoppers' attention, loyalty and dollars. In the process, the companies are increasingly treading on the other's turf: Amazon is opening physical stores and agreed to pay $13.7 billion for upscale grocer Whole Foods Market Inc. Wal-Mart, meanwhile, has beefed up its e-commerce business through acquisitions and offers like free two-day shipping.