[tomwalsham]

I'm in the 'sooner rather than later' camp, and have one more key driver.

Insurance. As soon as human drivers are provably poorer than automated drivers, the cost to insure a meat driver goes up. It will not take long to build a very strong case for the lower risk profile once the early adopter vehicles take the road.

[lkbm]

Why does it go up? The price isn't as high as it is because there's nothing better. It's based on the expected cost to the insurer, and that should drop when the predictability of the other vehicles on the road increases.