check out mp3car.com sometime. people have been installing pc's into their automobiles for years. there's tons of retail options already which offer all the usual goodies (ODBII for vehicles diagnostics, speed, rpm, gps, mp3, dvd, bluetooth dialing to phone, D/A input/output, etc). one of these systems was already on that pimp my ride deal on mtv.

there's even several software packages you can download around online specifically made for an overlay OS for automobile use, and integration with all those features (including relay control).. and they're free.

That xenarc they're selling if they're using the stock 200nit version its way to dark for daylight use in your car. I had the old one installed in my last VX and ended up buying a newer one with the daylight option (additional 150 nits). I have yet to re-install the module in my dash.

and the cappacino they got on there (the small footprint pc), last I checked didn't have a video chipset capable of displaying a resolution of 800x480 (which the xenarc's lcd module runs natively at).

Don't get me wrong, I love having a pc in the car. Its far superior to all other audio/video retail options out there at the moment for vehicles. But the price difference between the retail auto pc's out there at the moment vs. what you can assemble yourself there's just no thought involved. you usually can build it yourself for half the cost.