Thansk for taking the time to comment. I may be a pessimist indeed, but I find your prediction extremely optimistic. Bear in mind, complete AD means vehicles are self-operating in any conditions throughout the entire western world (US and Europe), and not just when the sun shines in the Bay area.
Also, even if the technology already can save lives, I believe policymakers and the general public will emphasize the live put at risk way above the lives saved by AD. Even if the latter is way above the former. I find it highly unlikely regulators are going to move that fast.