> It stands to reason that rolling boxes in bulk around on wheels should be a lot more energy efficient and reliable than flying individual boxes around in the

> It stands to reason that rolling boxes in bulk around on wheels should be a lot more energy efficient and reliable than flying individual boxes around in the air. Not necessarily. It would stand to reason if you were comparing identical routes, but we're not. Rolling around the boxes in bulk requires travelling in quite restricted ways, through often congested areas, and because it's in bulk needs to travel to every location on the route. So the final box has been carried far further than the distance it needed to. How much more efficient could you make your route in a normal truck if you were able to remove, say, 5 boxes from your load. That's 5 locations you can take away from your overall plan. How many truck miles can you remove from your journey? How many drone miles must you add?