This, but not "only" privacy.

It will be interesting to see how the larger issue of "ownership" is going to play out in an iCar (TM) world . Considering that you may still legally own the car but you're only licensing out your car manufacturer's software, it doesn't take much imagination of getting physically restrained by your cars' over the air capabilities:

- Missed an installment on your lease/financing plan? -> Grounded - Took your car in for service at an non-authorized shop? (think Apple disabling third party charging equipment) -> Grounded - (Some malicious actor injecting ransomware -> Grounded)