Old post
Depends on what you need from your carPC. I think one of those work well for all the standard stuff including video. You would have to get a USB sound card and check on availability of drivers before you buy one of these. But you would still need an expensive screen to do anything with navigation ect. Best to find one with an LCD controller built in, if your lucky you'll get alot of choices for screens of different size and quality that would work. Raw LCD's with inverters are cheap. Lots of choices for power supply with that board too.
I found a really nice one a couple months ago. It was used in airplanes as a multimedia PC. It had hardware DVD decoder and high quality sound. I think it was in the 1ghz range. It also had built in LCD controllers which