Okay, so I posted this over at mp3car.com and I'm looking for opinions from the other experts... I'm installing a Kenwood DNX8120 car stereo unit.  It has a 7in touchscreen display and composite AV inputs in the back.  I got to thinking, wouldn't it be cool to build a small computer and install a linux distro with a front end just for playing games!?!
So I started researching and I'm getting caught up.  Need everyones suggestions.  Has anyone worked with mini-ITX, micro-ITX or pico-ITX motherboards?
My goal is to get some kind of mini-ITX board with a fanless processor, minimal memory, flash mem storage or a small quiet harddrive, and embedded video.  Then setup the system in a small box and hide it in the glove box.  using a usb controller or a wireless to play games.
Ideas?  I don't have a budget yet, but I suspect I should be able to do this for $300.
Thanks in advance.