If you are going to describe a future, make it aspirational.
I like driving most of the time which makes your driverless cars a no no.
I want to personalise my space so communal ownership is a no no.
How about I get to drive my car when I want but can put it on autopilot when I want (or am required to by city limits).
Cars on autopilot can entrain with other autopilotted cars going in the same direction.
Entrained cars could travel at a higher average speed and a higher density than manual cars.
Entrained share a connection, one of the vehicles could be an inline mobile charging station.
The incentive of faster and cheaper journey times will lead people to choose freely to entrain where available.
Because my car can do both modes I still keep the freedom to choose between community transport and individual transport as needs be.