fun stuff!
As an aside Nissan tried to do some similar stuff with the R34 GTR and the built in LCD display has no RCA input or any easy way to plug your own video source into it unless you option it when you buy the car. They had at least 10 different Navi/TV options you could choose from the factory and/or dealer.
Luckily nowdays there is a guide floating around on how to hook any NTSC video source up with a bit of soldering and I have done it on mine, installed a DVD headunit, and watched "The Usual Suspects" on the screen the other night. Works brilliant