Continuing the theme of portability, there was a thread on the EMC users forum recently asking for opinions on laptop use with EMC2. He wanted to be able to use EMC2 to control a servo in a car. Laptops are a no-go for realtime reasons (apparently), but the poster was pointed to this website of mini PCs and enclosures.

They look really nice (esp the alu extrusion enclosure designed for vehicle use)...
http://www.mini-box.com/s.nl/sc.8/category.87/.f

Thread archive (I have no idea if this link will work)...
http://thread.gmane.org/gmane.linux....emc.user/18051