I figured I can get XCard and feed a couple of headrest TV screens off it, something like this:
Carputer video out -> driver-side touchscreen monitor
Carputer audio out -> small driver-only speakers or wireless headset
XCard video out -> splitter -> flip-down or headrest TV screens
XCard audio out -> headunit aux in -> car speakers
What do you think, will this work? How do you guys do this?