[JeremyNT]

> 4. Payloads on flying things have severe weight and volume limitations. This limits what you can deliver to things that are small and light.

This point to me seems like such an obvious hard limit on how well this could ever work without some serious advancements in battery tech, and it's why the whole thing seemed like mostly snake oil to me.

The x-copters have very low weight limits (and low flight times when loaded) and realistically this wouldn't be possible for weights over ~10 pounds without very short range limitations and massive downtime for recharging (and/or truly massive drones, which would pose too much of a safety risk in populated areas).

Not to mention the physical shape of even many small / light objects would make stable flight difficult or impossible. The second the wind picks up, they are in serious trouble.

Maybe some small and very specific niches can utilize it, but I suspect in almost all cases (even when it is possible to use these things optimally) driving is actually going to be cheaper overall.

[JohnFen]

This (as well as range) depends on what size and cost you can accept. You can absolutely get drones that can carry useful loads and/or that have long ranges, but they're large and very expensive.