For your perusal, the first IVehcs beta release to anyone.
Currently running in two cars...
Is multi-language compatable, and designed for touch screens.
Really easy to use without looking whilst driving... with large capture areas for the buttons.
Easy to make skins.
You'll need a minimum of WinXP and MediaPlayer10...
Bugs I'm aware of:
Volume retard on power events doesn't work properly... :)