[s1artibartfast]

I dont think that is necessarily the case. There are lots of practical logistics considerations that affect each around routing an capacity.

By way of example, rolling is more efficient than flying, but I would be shocked if flying an 80lb drone 1 mile over houses if it wasnt more efficient than driving a 10,000 lb van 2 miles on a grid, with dozens of stops.

Independent from Physics, there is financial efficiency, which has its own set of arbitrary variables.