Snow? Ice? What happens if I'm not home?
In the video I saw the robot in crosswalk, don't underestimate the current sense of entitlement car drivers have these days. They barely stop for little kids in the crosswalk - a robot pffft. Heck, people have started ignoring school buses with their stop signs out.
That little 'bot would be relatively safe from thieves in my neighborhood, but in some places you'd find it broken open and gutted in a field somewhere.