Heh, nice. I have a similarly cased computer set up in my kitchen. Thought it would match the decor
The one caveat with a plastic case like that is that it won't dissipate static electricity very well, and therefore charge can build up which could potentially damage something. I havn't had any problems on mine, but it's not in a moving vehicle either. It's probably unneccesary, but if you want to take it safe you should put grounding points around the case.