[philsnow]

> If you actually want practical and safe self driving cars widely deployed

I don't, though.

If we're going to propose a sci-fi future state of the world that will take a mind-boggling amount of investment, not to mention a giant leap of faith that we'll ever actually get there, I would prefer to reclaim all the space that's currently devoted to car infrastructure and be able to walk to everything.

> practical and safe

This isn't even enough; it would need to be cheap and universally accessible as well. I don't want to live in a society where we've agreed that cars are necessary despite a high and growing number of vehicle fatalities per year, and then provide miraculously-effective safety features [0] that only 1% (or 10% or whatever) of people can afford.

[0]

  if about_to_collide()
    dont();