Earlier quoted context omitted.
There's no way they're going to keep a modular car functioning for years without relying on frequent software updates.
You can just not connect to the internet and then it does not matter if software in your car is 1 month or 20 years old.
I think something like this happens to Macbooks if you set the date too far into the future: https://discussions.apple.com/thread/251100942?sortBy=rank
I suppose then you can change the date on the car's computer so it's still 2014 or something, at least the car would remain a non-fascist place with Obama still president...