It would be possible I think, but that assumes the gear selector isn’t required to be moved to change gears. If it’s all electronic and software, then I believe it could be offered to the existing fleet.
But forced upon the older fleet? Seems impossible. Even if I had the new screen with the option, I also still have the gear selector. I can’t imagine a scenario where Tesla forcibly disables that so it’s literally a useless stalk that can’t be used. Well I guess I can imagine the scenario but I struggle to imagine why they’d go to that trouble.
I share the concern with how this Smart Shift would possible be useful...but I’m willing to try it out. I’m glad I’d have the gear selector there for me if I needed it though!