I have a 8" LCD with touchscreen that loses calibration with each hibernation. After 3 re-boots its off by almost 3/4". Sooo...
I rewrote my system for a small keypad! It just sits on the pass seat and I don't have to actually look at the screen to run the system. $34 from Compusa with 2 USB ports at the top.
"/" ,"*" and "-" starts the apps.
4,6,8,2 move the screens.
"+" and Enter control the volume.
0 is the pause.
Much happier not to have to look away from the road at 80 just to change the volume
Now to get a 4 way and 2 way switch from a game controller and fit it to my steering wheel. Hands not even off the wheel!
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Shuttle FX41G, Modded MK4.5 PSU w microcontroller, 500Mb Ram, 40 Gb HD, 8" LCD w Touch screen, WLAN.
5" LCD for IR and reverce cameras.
Http://www.menloparkrandd.com/scirocco