Ok this is the second attempt at posting this (Doh - don't click close window)
My Smart Carputer Install:
Current confiiguration:
Intel Core2 Duo @2.2Ghz, 4GB Ram, Vista 64, Frontend-RoadRunner
120GB SSD, 1TB 7200 HD, DVDCDR, USB cardflash hub 4 port, 8 port USB hub, 2 USB GPS receivers, Bluetooth adapter, OBD-II interface, Touch pad, wireless keyboard, Fusion IO interface, 4 port RS232 interface
8" touch screen monitor (custom bezel)
7" touch screen monitor
HD Raido tuner, HT Omega sound card tied to 5 channel Alpine PDX Amp
Speakers Front - Polk db6501 6.5" with cross and tweeters
Speakers Rear - Polk db651 6.5"
Sub - JL Audio 8" in Smart Madness sub enclosure
USB video capture
RS232 video matrix switch (16 input, 2 output)
4 cameras currently (6 planed)
Front - Sony Super HAD Hires IR, FLIR Pathfinder
driver - Sony Super HAD
Rear - cheep ebay IR
Two DC-DC intelligent regulators
Prolly more that im missing
Here is example screen images (I pulled form carputer site, hassle to recap all the screens from carputer)

above screens are (from left first then right)
Main music player
frontend skin configuration
HD Radio
GPS navigation
Live Traffic Cameras (pulled from internet)
Fuel Price locater (pulled from internet)
Vehicle maintance
OBD fuel consumption and loging
realtime OBD value display
Satalite weather map (pulled from internet)
There is other photos in my gallery
There are many other screens, too many to show. IE OBD gaguges showing engine RPM, Tempature, ECU warnings. Movie listings, Lotto.
Outside of the front end I have full OBD diagnostics software installed too. 
The internet access is done via tethering to 3G iPhone. There is a per to per connection on the iPhone and I have remote access to the carputer from the phone. Interesting looking at carputer screen on phone. Its tiny!
I am in the process of finishing the interfacing with the car with the fusion interface. It will control the windows, and door locks, It has 4 temperature probes, I'm planing on putting one in the engine compartment to show engine compartment temperature. Was thinking of some how putting one in the air intake but not sure if there is OBD value already for that. The car can be started threw this. When the car is out of warranty and is ready for retirement (70-100k) miles. I do plan on taking things quite a bit further. I have software and write a few things for visual recognition so between the interfacing and camera's it shouldn't be too hard to tie into the cars power steering and breaks.
Think DARPA! Hopefully there will be more technical information made available on the car and the ECU
That's it. Inky's second brain