Walmart is patenting its own blockchain-based delivery system. 

This is more concrete evidence that the blockchain will enable the Internet of Things, robots, drones, driverless delivery vehicles and more. 

From the CoinTelegraph article: Walmart’s “Smart Package” patent employs a Blockchain-based tool to track package contents, environmental conditions, location and other details. The device described in the application is intended to be used in new technologies like autonomous vehicles and unmanned drones. 

Find more details are at the CoinTelegraph site: https://cointelegraph.com/news/walmart-to-implement-blockchain-based-delivery-system.