Not See .NE. See Not
When I taught my kid to drive, I made it very clear that there's a vast difference between 1) looking and not seeing anything, vs. 2) looking and seeing that the road is clear. My kid is programmed correctly, thus hopefully avoiding an entire class of 'I didn't see' accidents.
I wonder if the Googly Cars and similar are actually programmed correctly? Giving how Google can't even program a browser to not crash, I have my doubts.
The good news is that they'll trickle onto the roads in small numbers and we will soon see. It'd be a huge risk if they loosed a million onto the roads one morning.