Overlander, That is great. There are a few of us in Australia that raised a thread for off road car computers here:
http://www.mp3car.com/vbulletin/gene...carputers.html
You also might be interested in this thread for topo GPS mapping using OziExplorer (there is a link on the first post in the thread above):
http://www.mp3car.com/vbulletin/sb-s...iexplorer.html
Watch the OziExplorer thread as we should have a first cut of the embedded version out in the next few days as Bugger and I have had a productive weekend on this.
Don't hesitate to chime in on either thread. Great to see another off road Car PC!
Rod