... and certainly the most mobile.
If you haven't seen everything, read this article on how the new Nissan Urge can be used as a steering wheel and pedal controller for the in-trunk Xbox 360 (when in the park position). (Also see the press release from the end of December.)
My favorite quote from the article:
"The project was a joint effort with Microsoft, so the Xbox 360 beneath the boattail-shape trunk, one of a half-million consoles shipped since the game system went on sale Nov. 22, is different from the others: no one stood in line to buy it."
As I've seen in Tokyo, in-car TV and DVD players are popular (especially in rush hour parking lots): I vividly recall a cab driver in the middle of a traffic jam putting his car into park and watching the news. Now gamers can drive when they're not driving. A special edition of Project Gotham Racing is outfitted in the Urge concept car; one can only wonder if the Urge will be added to the car rosters in PGR and Forza Motor Sport.
I wonder how force feedback is incorporated into the car? ; )