I think Elon Musk long term vision is nothing like you guys described. Think of it as your computer. You set "update schedule" lets say from 10PM to 6AM, it will do all the updates without you even bothering you.
So think about it. I think long term, you will set your Telsa car "available service time/date". The car will talk to closest service center when a spot is available. The car will SELF DRIVE to the service center, and then DRIVE BACK where it left. Never bothering you.
I think that is HIS long term vision. What you think?