The very same auto manufacturers you are thinking of are the ones working on a concept device that nearly does it all. It starts with an MP3 player and then adds on Wi-Fi, 3G via UMTS, and so much more.
It doubles as a cellular phone too, thus the addition of the 3G connectivity. It also does navigation, controls the functions of your Audi, and so much more.
There is even a camera built in. Sure, it has a some functionality, okay, it has a lot of functionality, but its not really all that attractive. I saw an A8 over the weekend, and it was, as it is every time I see one, a true work of automobile manufacturing art, and that’s just an A8, the R8, well that’s a whole other story, all I am saying is, maybe they should just package all the hardware for the device up and then send this device over to their auto department for some heavy redesigning.