I'm waiting for the first time someone bundles one of these things into the back of a van (presumably GPS-shielded) and then strips it for parts. Even Robocop didn't escape that fate.
More seriously, I honestly wonder about the liability issues. If that thing falls over / drives over someone, then presumably the robot company pays the bill. "We're only paying for their services, we don't own the robot" is indeed the best thing at that point. Their problem, not ours.
It does make me wonder why you can't just hire a guy for less than $60,000 to do the same job, though.