When you say "line of sight" do you mean via camera, or that someone literally has to drive out and watch the drone land? The latter seems to not make much sense but that's what I think of when I read the phrase.
Well of course. I assume it's to prove the concept safe to gain approval to fly without a person present. But here we are, no such approval, and they're expanding territory. Why? To be challenged by more diversity in delivery situations? It doesn't seem like they have a clear path to success.