its been done. One fellow who did it, used it as a car pc and sold it on ebay. Like stated before look at the mini-itx boards. WWW.MP3CAR.COM has a few boards for sale in their store. I myself have a EPIA SP13000 in my car and its about 17cmx17cm. EPIA also makes a NANO-itx motherboard with is about the size of a cd jewel case. Good luck.