What's the business model here? It seems like delivery bots could only work on wide walking paths on closed campuses. Or are the startups here assuming we'll build dedicated infrastructure for them? I can't imagine they would ever work in real world cities (putting rolling roadblocks on busy public sidewalks is antisocial at best, and besides they're bound to get blocked by obstructions en route that require them to…
These little guys or very similar ones wander the sidewalks of Mountain View freely.
(EDIT: of course, there's also an East Coast/West Coast, or at least an old city/new city issue here. Based on your experience, can you imagine them working in NYC?)