I think it's easy to do #1 by having a dock station with the van actively reaching out to grasp and control the movements of the drone. For #2 I think we've al

I think it's easy to do #1 by having a dock station with the van actively reaching out to grasp and control the movements of the drone. For #2 I think we've already solved that by just having some sort of cartridge battery with exposed contacts - think something closer to an old flip-phone battery that is forced to slide into place correctly. For #3 if we assume the van is equipped to manipulate drones into properly docking the drone this really isn't a stretch - and inventory retrieval systems have been realistic long enough that they're actually featured in Hackers (1995)[1]. Regarding #4 I guess this might be a problem somehow? - but let's just assume the battery storage bank is on an external wall of the van - if security is an issue we're going to lose like a foot or maybe a foot and a half of the internal space to the retrieval system - again I don't think this is a problem. Lastly onto #5 I could see weight being possibly the most difficult road req to comply with here - batteries are heavy and generators are heavy - that's a lot of weight and ideally these vans would be able to drive on any road out there - including those with old wooden bridges or "seasonal pavement". I think of your points above - #1 is the most difficult in that step you're still needing to contend with the environment which may involve strong winds - once you dock to the van (assuming you can limit yourself to a single docking station or a small number) everything else seems pretty trivial... That all said I don't program autonomous drones for a living so it'd be ridiculously hard for me - but I assume if we can get drones to reliably do pre-programmed flight paths we can probably tackle this. Most of the problems I can think of are on the other end where stupid users will do all sorts of non-compliant things with the reception pads - like placing them in impossible to reach areas due to locked doors or too little clearance to actually get a package on the target - also just like... keeping those things in a functional condition. 1. https://youtu.be/2efhrCxI4J0?t=111 https://youtu.be/2efhrCxI4J0?t=111