Henry Ford never envisioned mass transit.
Trains and trolley cars existed in Henry Ford's day.
. . . Let's say that a PRT system, such as I described, could and did become reality. What could your own car do for you that this could not? Assuming a PRT system that operates at peak efficiency and works exactly like I've discussed, then what could possibly be the downside to that? You say you like owning your own car. Why? What does it get you that this doesn't?
The freedom to go wherever there's a road, whenever I want to go there.
The pleasure of controlling a responsive machine and maneuvering skillfully in traffic.
The satisfaction of gloating over those poor schmucks who have to take the bus.