Oh, you mean like the beer cans, paper cups and bags of fast food that people fling out of their car windows? Some people are neat and some are slobs. They are not divided by their smoking or non-smoking preferences.
There would be a lot less cigarette butts on the ground if receptacles were provided. What is everyone else's excuse for other kinds of garbage?
If you are an anti, be sure you don't litter before you point your finger at someone else.
You can thank open container laws for that one. I grew up in Very Rural county in Ohio. It was common for people to toss empties in the back of a pickup truck or the back seat. At some point in the early 80s, the cops started enforcing open container laws, even in the bed of a pickup. Guess where the cans went thereafter?
Not excusing or advocating drinking and driving but if it is illegal to have certain trash in a vehicle, guess what happens to that trash?