For starters, I don't smoke cigarettes. I used to smoke socially when I'd had a LOT to drink and wanted a quick nicotine buzz, but I'd always dispose of them properly. Can anyone tell me why it is that some smokers feel they have the right to toss their cigarette butts out the car window? Do they not understand the concept of littering? Do they feel they can trash their bodies with cigarette smoke and thus justify trashing the planet with those bits of crap? I have a car without an ashtray. I carry around a small plastic sack to keep bits of trash in. When the sack is full, I emtpy it into a trash can, I don't dump the stuff in some parking lot or thow it out the window as I am crusing down the road. If you do throw your butts out the window, don't give me the excuse that the car you drive has no ashtray. That's no reason not to get a portable ashtray and disposing of those butts properly.
To learn more about this subject I searched Google for cigarette. The third hit down was:
http://www.cigarettelitter.org. I was a bit shocked that it would show up so high in the search list until I realized how many other people are interested in the topic as well.
One last story. A while back I was hanging out on a pedestrian mall with a couple of friends that smoke. When they finished they tossed their butts onto the curb. When I told them not to throw their trash on the ground, one said 'Why not? The street sweeper has to have something to pick up.' Sheesh
Talk about a rationalization.