Except it won’t work at scale. What happens when it snows and there aren’t enough call center workers to take over for all the drivers who need it? Probably a few times a year around here there is enough snow and it’s enough of a surprise where it takes a while to clean up even major roads so you can see the lines. If self driving cars need lines in the road or else a human to take over in that situation, you’re talking about cities grinding to a halt several times a year.