I'm toying with an idea and wondering if anyone's done it in their rig. Did lots of searching on external temp guages (for monitoring coolant temp) and OBDII scanners. I'm thinking of combining this with a GPS system and using a Pocket PC for both to have access to real-time coolant temps and GPS when needed (not to mention all the other OBDII fetaures). I figure its a few cables (bluetooth maybe?), but would give lots of info through one interface. I have a pharos GPS receiver that I use on my laptop, but haven't bought a Pocket PC yet. Thoughts?