This is an idea I have to build a Car PC.
This is dependant on the how easy it is to modify the software and the overall build of these laptops. So I will post it here in case I have a change of heart.
I was going to get the original ONE+ and just use the tablet.
Try to install a touch screen inside, like:
http://beta.ivancover.com/wiki/index.php/Eee_PC_Internal_Upgrades#Touch_screenConnect a GPS unit (Which I have at home, just need the USB cable)
Then build the software I need to run on the PC, I have seen a distro somewhere, but I will probably build my own software on top of the base OS supplied.
I am not going to embed it into the dash, yet. But I may do if I can find the right person. But this is the idea.
http://www.timekiller.org/carpc/I have heard that the manufacturer has released a 2.6 kernel for the device, even though the Elonex ones use a 2.4 kernel.