Earlier quoted context omitted.
Not really. If something goes wrong, 99.9% of the time, the solution is to slam on the brakes, and maybe swerve a little to avoid an immediate obstacle. If a self driving car only does this, it will be a way better driver than a human. Talking about weird edge cases misses the point. Edge case = slam on the brakes.
Really? So easy to think of scenarios where there _is_ no safe answer. For example, what if it's dense fast traffic (say, one car space between each car, 50mph) in random black ice conditions and sensors suddenly begin failing so the software no longer trusts is inputs? Based on recent good inputs, accelerating, swerving, or breaking are all dangerous, and based on the loss of "vision" continuing at current speed is…
I would assume that a self-driving car would allow more than 1 space between cars when going 50 mph, and probably wouldn't be going 50 mph when there's black ice around.
Hell, most humans wouldn't be.