Aloha carsly,
I recently purchased a new vehicle and that consideration, of iPhone integration, was one of my primary concerns. What I determined is that BMW is probably the closest to the "iCar" you envision. I looked at the X5, which displays iPod/iPhone content on the Nav screen and uses the vehicle's stereo to play iPhone content while also charging it. I couldn't handle the price, so I purchased a Lexus RX350 - I'm currently using a Belkin car kit with clear scan to play iPhone content, and while it's not as good as using the Belkin TuneBase FM with an iPod (there is a bit of static as it's not as sensitive as I would like), it is very nice. Of course, if Lexus were to provide an aux input, I would've had to purchase only a car charger.
Imagine a car with built-in USB ports for charging peripherals, or better yet, built-in displays, on the backs of the front seats, for back-seat passengers. Apple could engineer some way to access a laptop's hard drive while closed (and not causing too much heat build up) and we could use a special USB cable to connect the laptop to one of the car's USB ports. The front passenger could also have the same sort of access. Of course, the car should also include some sort of holding area for the laptop in question. Lastly, the car would HAVE to support both iPods and iPhones with both bluetooth and stereo integration, displaying the latter on a large screen on the center console.
Maybe I'm just off my rocker, but that would be nice. Assuming the price would NOT be sky-high, I would have to consider it.
HawaiiMacAddict