I get that having a single model that you can artificially differentiate to multiple product lines is efficient for the manufacturer, and not unprecedented: CPU manufacturers do it all the time. Why does it rub me wrong?

I guess it is in part that there is a monthly subscription model that is being pushed, for faster acceleration, but also for seat warmers. And that irks me in the sense that it alters what it means to own a vehicle. It also leads me to think that they will try to crack down on aftermarket mods: If all that keeps your car slow is a chip, replace the chip (i know, easier said than done these days). Its also that it means maintaining a constant relationship with a company. Right now, I buy a car, I'm pretty much done with them, but this way its one more account that takes money out of my bank.