My point was simply that, if you're not driving and are absorbed in something else whether a book, a movie, a game, or just zoned out, 10 seconds is not a lot of time to figure out what's going on because the car's computer has encountered something that is sufficiently non-standard that it doesn't know what to do.

I do there there is some period of time that is reasonable for a handoff. Maybe a minute? I actually believe that full autonomous driving with geo-gating and condition-restricted limits is probably how things will play out.