Crap, I thought you had a gun in there when you left and now it was gone! hnoes:
I leave empty holsters in my car on occasion, I wouldn't recommend it because some peckerwood (an official police term, from what I've been told) will think the pistol is still in the vehicle and will break in trying to steal it!
The good news is that if you catch 'em, you can shoot 'em!
Just kidding, of course. Well, maybe not; but either way, as long as you weren't the victim of a crime than all's well!