I put this thing in my friend cavalier a while ago. It was really pretty neat. This was the day i finished it. We worked out a few bugs such as actually mounting the computer in the trunk and not having to boot them damn thing everytime.
But the thing was fully funtional. Ontop of the touch screen music/dvd player it had nav, WiFi, Firefox, AIM… You name it, it had it.
Check it out
But just letting you know, both people i know who had these totaled their cars shortly after 
This cavy is no more and the whole setup is sitting in pieces in his house 