Haha pun not intended. Yeah I mean something like cruise control + lane keeping which has a limited scope but is predictable and doesn't tempt people to move to the back seat and get killed. Or maybe virtual "rails".

Rail or line following might be a more "pedestrian" approach to self-driving cars.

Ah I see, yeah, to be honest I don't get why we aren't simply doing that already. Adaptive cruise control we already have, draw one more line in the center of highway lanes, and have some warning system for 'accident up ahead, drive manually', and we could drive autonomously for any large distance without magic and without needing to have constant attention to take control when needed. This could easily have been implemented decades ago, but we didn't/don't and now we're still not at that level. So yeah, agree with the person I was replying to about the preference of non-magic there.