You can push the supermarket thought exercise further and maybe bricks and mortar stores go away all together and we end up with some kind of Webvan / Amazon Fresh service delivered by autonomous vehicles. Those vehicles would be dispatched from autonomous distribution centers, and goods would be created in autonomous factories or picked in fields by autonomous workers.

If you think of people as essentially automatons (well, maybe highly capable meat robots), the only thing really different than the way distribution works today is we still go to the supermarket. If someone can crack the online grocery shopping experience nut, there's no reason why that couldn't change.