This! There are probably gonna be times where you need to drive to get someone somewhere in a hurry. Cannot speak for everywhere, but in my part of the world the police won't care if you are speeding to get someone to hospital, you'll still get a ticket, minimum, without license.

Still not sure what you are getting at. With sex and existing, those are themselves the goal, so having a machine do it for you makes no sense. With driving, getting from A to B is the goal, not the act of driving itself, which makes calling a normal cab or a robo-taxi both equally valid ways of achieving the goal if you don't want to drive.