So, for a while I was considering a long rant about why this would be obnoxious, especially after hearing on so many podcasts about how head tracking is what this new motion detection technology could really be used for.   After thinking about it a lot I realized there isn't much of a rant, but I just don't see how it is possible.  I see one of two problems occurring.  In the first case you have head tracking and when you turn your head to look, say out the side window of a car in Forza, you are no longer looking at the screen.  The second problem I see coming from if the process of correcting this.  If you corrected this by making it way more sensitive the problem would be that you would have to hold super still because any movement of your head would move the camera.  This also does not sound appealing to me as someone who adjusts a lot while sitting.  Maybe I am more fidgety than most people, but I don't think so.