Ah here it is. I was looking for this topic on page 2 and 3 when it got bumped by Daysleeper
Richard, my first task was to decide on the OS platform to use. At this point Windows (

) has scored a lot of points due to the fact that there are lot of Software out there available for this kind of application. Otherwise you will need to do some stuff in-house, like some very crafty and talented people!
Personally I want music, car diagnostics and GPS.
Daysleeper I'll see if we get this mag over here, though the internet is full of Carputer blogs.