Amazon is granted a patent for using a subterranean network to deliver packages

Maybe it shouldn’t be that surprising that Amazon has patented a system for delivering goods via a dedicated network of underground tunnels. After all, the Seattle-based company is looking into virtually every other mode of transportation. But the idea seem ambitious, even for America’s largest online retailer. Amazon has experimented with delivery services that make use of autonomous drones, bicycle couriers and branded fleets of airplanes and trucks. There’s talk of self-driving trucks, flying warehouses and a system that would let drones hitchhike on trucks and buses.
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