What are you planning on doing with it? Putting it in your dash and just using that as a CarPC?
As for a CarPC:
I'm sure they're nice, but I would also assume they have limited capabilities compared to a PC. For instance, it probably has fewer connections, thus limiting you to one, maybe two, simultaneous bluetooth connections for any peripherals. Also, there doesn't seem to be much space for software, music, frontends, etc...
As for taking with you and using it to surf the net somewhere:
Sure, looks pretty cool.