Kind of what I'm thinking.... I ordered a spare player, but I wanted to use the extra sled for car #2, so I'd have 1 player that roamed between both cars, and one that lived 'at home' and stayed in it's little docking sled, except to sync, and the back would be exposed. I'm not worried about wear-and-tear because it won't move much. I was just worried if I built something that was fully enclosed, the unit might overheat.