I've starting building a list of components to buy for my upcoming carPC. I would really like to have 3 zones that can work independently in a sense that the 2 headrest LCD's in the rear can each play their own source of video, or game, and what not and I could have the LCD up at the cockpit do what it needs to do. I got to thinking about weather maybe a lower power eyefinity card would be able to do this better since you can have up to 6 HDMI/Display port outputs this way? Would any of the multizone software support going this route? My concern with using the USB displays is that they won't be completely smooth on video play back not to mention drawing USB power and using CPU resources.