Glad to see everyone is making progress.
Seb, what is that avatar??
Made some progress myself. I got power for the touch screen from the cig lighter. I basically spliced into the power from that harness. Works well. I picked up a port replicator for the laptop with a mechanical on/off switch so now I can have a remote power button. Couple pictures:
I also picked up this USB GPS Receiver. Pretty cool, works great. It is the one found on mp3car.com.
Now I just have to relocate the trip computer/clock.