That's because everytime they updated carOS:
:ducking:
- the UI changed,
- They dash display would suffer from jelly scrolling
- the car would turn off when you got a Telugu text,
- carOS would have to index for 2 days before you got full performance again
- the HVAC would get the temperature wrong and blow hot air
- the battery would drain too fast for whatever reason
Seriously though what made Apple want to even try to do this. I’m not mad at Apple for canceling it now, but I am kind of annoyed they let it go so far in the first place.