Years ago I had a go coming up with something that I could use mainly for the audio side... never ever came up with a finalised solution to it, and certainly not one with a screen (you kinda needed to know what buttons to press IYKWIM ).
Ever since then I keep getting drawn back to it again, esp with so many advances in the screens (and the prices dropping, etc as well). I do fancy having a go at one again, esp after having a wee read of a few other forums today
I do think that having it being able to read the ODBII port while you are driving along would be quite cool too... less requirement for a heap of gauges dotted about the cabin as well.
Al, you mentioned your existing ITX PC was a bit underpowered, what kind of spec is it?
Iain.