So, is the big Heineken beer can meant to give the impression that it's actually beer-cooled? It kind of looks like that's what they were going for, though I doubt it really is.
Anyway, a proper beer-cooled PC should have an external passive radiator that you can pour your beer onto, whenever it starts to hit thermal throttling.
A lot of the vehicular-themed ones really look like they ought to move. I mean, what other point is there in mounting a PC in some kind of vehicle, if it can only just sit there? Some of those case modders should team up with some roboticists and take their skill to a whole other level.