Mobility pundits have promised us a future where drones would seamlessly deliver goods to our doors. Most of us are still waiting.  The logic of drone delivery is to provide a sustainable option for last-mile shipping. Rather than a singledriver dropping off packages at dozens of homes, separate drones can simultaneously transport goods.  But has the trend evolved beyond the hype? And when can we expect actual drone delivery?  Amazon’s history of drones  A prototype Amazon Prime drone. Credit: Prime Air Perhaps the best-known investor in the tech is Amazon. The company announced an experimental drone delivery service with great…

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