True. I suspect that most places with a fair number of people, even in semi-rural or rural areas, in the US have a walmart within 30 minutes. Since this servic

True. I suspect that most places with a fair number of people, even in semi-rural or rural areas, in the US have a walmart within 30 minutes. Since this service would defeat the purpose of Wal-Mart, I can't see Wal-Mart supporing it, unless there were a merger with Amazon. But the fact that there are so many Wal-Marts suggests that it might be possible to build sufficient infrastructure that mostly covers the continental US, for example.