Stanford lab envisions delivery drones that save energy by taking the bus
A commercial delivery drone carrying a six pound package landing on top of a bus between tall buildings is going to make a ridiculous discordant growl.  Six of them coming and going within a quarter mile at any given time are going to sound like an auto-tuned pack of hounds from hell.(This of course is ignoring what happens if something fucks up and suddenly it has 1/8th of a second to decide to fly out of it or brake those giant swinging carbon fiber blades before they encounter human flesh.  It's like a trolley problem on a trolley.).No way. (IMHO of course)(e.gVideo of a Matrice 600 with a payload of ~8lbs  https://www.youtube.com/watch?v=jayVMmvLxOAEven better, 25 lbs from 60' up lol  https://www.youtube.com/watch?v=jULQrdUTngM)