Isn't it reasonable to think that once you have enough density, the business starts making a lot of sense (e.g., collecting (in the same car) multiple orders si

Isn't it reasonable to think that once you have enough density, the business starts making a lot of sense (e.g., collecting (in the same car) multiple orders simultaneously from the same restaurant -- and delivering multiple orders on the same car to the same building/neighborhood) I imagine you'd need a local hub/exchange for it to really work. I do question whether the model works outside urban settings though.