I just want a dumb car
I change my car every 7-10 years, I change my phone every 18 months. Putting technology like this into a car is just wasted effort since the car will be obsolete for most of its useful life.
All I want is better connectivity between car and mobile device, with a standard way to mount and charge a phone securely (with an adapter for specific phones), and possibly displaying phone content on the dash. Since this probably requires agreement between (at least) Apple and Google on how to do this, it's unlikely to happen.
My current car choice was limited by the fact that only one car salesman knew what an MP3 player was, and thus understood my requirements for connecting my PDA to the car's audio (via an AUX socket). I expect the technology change during the lifetime of my next car will be equivalent to that between a Zaurus C-860 and Nexus 6 (and my current car still has a few years of life left in it).