Good job. I'm still ancient myself. It's been over 2 years since I started making carputers and I'm still running a P166 computer with DOS Mpxplay and a 20 gig hd. It's only for music playback. But it sounds great, is stealth, and works nearly flawlessly. So I never have gotten around to upgrading. I have no need for DVD or GPS.
In a van, DVD would definitely be a nice upgrade. Once you get into carputers, it's hard to go back.