I don’t know how many others will find this cool but my inner drone geek certainly thinks it is cool! Inside the DJI Flagship Store in Beijing today. Its just a couple km from my home and opened just a few months ago. This today was the first time I saw this. As a demo a Mavic 2 Pro flies autonomous. Then when battery gets low it auto lands and a robot changes the battery out and off it goes again. Very cool! Enjoy.