This thread does provide some food for thought. I.E., I often drive a (older) pickup truck. Sometimes, when I come out of a business and go back to the truck in the parking lot, I will notice that some.....citizen....has mistaken my truck for a dumpster (well, it IS dark blue) and tossed a beverage can in the bed. Sometimes that can formerly contained something alcoholic.
Previously I would
- (always) cuss about ill-manners and the implied insult to my truck

- (sometimes) pull the can out and put it somewhere appropriate

- (sometimes) drive off and do the above later at another location
I don't think I'm going to leave it til later from now on if some overzealous rookie can potentially use it to give me grief.