I would expect some sensor to detect some kind of impact/resistance and just stop. I mean if my robot vacuum can do it, I'd think a machine capable of killing s

I would expect some sensor to detect some kind of impact/resistance and just stop. I mean if my robot vacuum can do it, I'd think a machine capable of killing someone would too. But maybe that's a feature that'll come with their Level 4 autonomous software that'll come out very soon now /s