i can understand one screen on the roof if you have little kids and you are going on a road trip, to watch dvds. but more than one, excluding navi, is stupid, especially visor mirrors, those serve no purpose, the driver should be focused on driving, not the mother****ing today show. If you are spending over 1000 dollars on multiple screens for your car, you have the economical smarts of someone who invests in British petroleum.
besides, having multiple screens in one area is irrational, "oo look at the 6 inch screen, now look at the 10 inch...How cool!" is that what you do?