You know come to think about it a pocket PC device, is actually a very good option costwise. b4 I went in to carputing, I used to use my pocket PC for in car video and audio, but navigation was hard b/c of the small screen. But now the revisit the issue, the problem waesn't really the screensize as much, b/c if you have it sideways like this the Video is pretty ok for in car use(I mean thats the size of come car tv screens, that people bought when screens were expensive).
I think what we need on PocketPC end, is an interface software like mediaCar or frodoplayer e.g that has support for the horizonal position like video above, and lots of large buttons to navigate things around.(i.e audio and video).
As for memory, these things have the 1gig CF cards available, all you need is to really power them up with car charger, while still not as powerfull as CAR PC, they still pack a punch.
Oh also one thing I enjoyed was the instant boot time vs carPC, and well no need of shutdown controller for this guy too.
what do u guys think?