And if self driving cards are cordoned off to special areas, they are just another extension of buses, subways, trains, but with less manual operation needed. The criteria that self driving vehicles perform very well everywhere is extreme when we already have so many modes of transportation designed for specific contexts.
Then call them and market them as something other than "car". Because if you call it a car and market it as such folks will treat it like one, which means exposure to every type of road and weather condition known to man with potentially lethal consequences if the software can't keep up.