I wish I had put this in my other reply. Here is a guy trying to fix used Teslas that are only a couple of years old: https://youtube.com/watch?v=5rwEIo-PWP0 If it's that difficult and expensive now, how much more so will it be in 50 years? Even the door locks are overcomplicated. When that central computer or display goes out and the only ones available are from wrecks, and you don't have the software to install them, good luck with all that. So much for "less moving parts" lol