I just hope my DoorDash order is not sandwich #9,836... A locomotive would be even more efficient over long distances, carrying 200,000,000 such packages. A co

I just hope my DoorDash order is not sandwich #9,836... A locomotive would be even more efficient over long distances, carrying 200,000,000 such packages. A containership even more so, carrying more than 20x the capacity of a big freight train, though I don't think they have the draft to fit up the drainage ditch behind my house. Nor do I have rails. I jest, but the long tail is a real problem with such efficiency calculations. You're right that it's never going to make sense to have migrating swarms of drones flying above the interstate carrying packages cross-country, but are real efficiencies here at the individual level: https://www.cell.com/cms/attachment/4b8da4bb-42c2-4b91-baf2-d8abebef903b/fx1.jpg https://www.cell.com/cms/attachment/4b8da4bb-42c2-4b91-baf2-... Graphic from https://doi.org/10.1016/j.patter.2022.100569 https://doi.org/10.1016/j.patter.2022.100569.