[alkonaut]

I think it might be possible that the subscription fleets that already exist in many cities can be used to "summon" (like teslas can be summoned) a few blocks ro a few miles, autonomously, because they know the area.

That makes these subscriptions much more convenient than having to pick up/drop off a share car in a fixed spot.

The user uses the car for a while in semi-autonomous mode (car can drive 90, 95 or 99% with user supervision) and then the user can return it by letting it drive back. If the car is stuck it just stops and a driver from the fleet company comes along to drive it.

I think a scenario like that could be viable in small scale for some metropolitan areas (good climate, limited user base etc) within 5 years.