Can't see a problem here, the car folds down its seats, the warehouse loads a de facto standard mini shipping container before the car arrives, throws it in the car, off it goes. It might even ascend to an ISO standard, not just a de facto one, such things happened before.
Perhaps, but now the standard shipping container slips a little bit, and gauges a scratch into my seats and sidewall on the first of 4 deliveries. I notice two days later when I'm next using the back. Who pays for the cost of re-upholstering my seats, and for my car-sharing costs during the repair?
My seats?? Noone owns a self driving car, you rent one when you need it. As for the fleet owner, I bet they will solve this in any number of ways somehow including the risk in the cargo fee
I predict plenty of people will own self-driving cars, at least at first. Habits don't die easily, and car ownership is seen as a key part of independence and self sufficiently in America. Some people will want to own them, whether or not it makes sense.