Well I looked on Pioneer's site...it seems that the DVD receivers they have, have a yellow RCA video input in the back...so if it were me I think I'd get the minipc that can fit under the seat or in the glovebox. Then I think you can buy them with the RCA video out, then run that to the pioneer dvd receiver... it would work for everything, sound, movies, and I'm assuming an "AUX" button would bring up the computer. And the comp I saw yesterday had a bluetooth keyboard that had a small joystick and two extra buttons built in for the mouse...that would work well...and hopefully the comp would just hook up to the battery without killing it :-/
EDIT: And that software I mentioned a few posts back that hooked up to the obd2 looks like it would work pretty good...
Last edited by mosc; 10-01-2009 at 04:23 PM.