iTunes for autos?

So it's an open secret that Apple and BMW are working on an
iPod Adapter for BMW's 3 Series, X3 and Z4 automobiles, but is something even bigger in the works? Steve Jobs let slip the other day that they're talking to several car manufacturers about bringing iTunes into the car, which could mean just more iPod adapters, but you gotta secretly hope (especially now that the AirPort Express has arrived) that he's thinking of something grander, like some sort of iPod for cars (like Rockford's Omnifi Auto Digital Media Player) which would let people wirelessly sync with iTunes on their computers.