Good point. I wonder whether the ratio of drunks behind autopilot wheels is different than average. Could be lower (because richer) or higher (because richer).
There could easily be more than just a wealth differential, e.g. people who are more are of their emissions impact might also be be more aware of intoxication impact.
I'm any case, "statistically more safe" is a weak argument, e.g. we would be terrified of boarding a plane if they were merely statistically more safe than driving (by a small margin).
What that commenter is getting at is that the term "statistically more safe" is meaningless because it can be such a wide net of meaning, e.g. a very small margin (1%) or a large margin (50%).
