I think the VIC's CRT circuitry is designed only for itself, with no way to import a NTSC, or any other type of video signal into it. The only way I can see that happening is if you were to completely redesign it, or replace that CRT screen with an LCD touch screen, and re-design the vehicle controls. Either way, there is some major engineering involved...
Cool idea though... Really like it! Would also love to see pics of your VIC in action!
_________________
"I know that you believe that you understood what you think I said, but I am not sure you realize that what you heard is not what I meant."
http://www.cardomain.com/id/88delta88