(G) Ash tray

I was just lookin at my ash tray today (it's that one that's like a cup with a lid on it that sits in the can holder) and i noticed that at the back it's got some guides as if it is supposed to fit onto something. Also, at the bottom it's got a hole, also as if it is meant to fit onto something.
Does it fit anywhere or is this an ash tray that is used on several models and this only works on other cars??
Thanks