Interesting that you use self driving as the metaphor here, when we've been told for years that self driving will be taking over the roads any day now... and yet...
Prolly what, 30yrs? Places like SV or other advanced locations will hit majorty faster than that. The rest of the world ~50yrs.
Hype is fast but tech is a decades rollout. AI will hit its stride in 5-10yrs. Which is scary because it's already stupidly powerful. Saturation of AI though is still a 20yr+ horizon.
1.5 million people use it for 90%+ of their drives