Yes, many of them but not all (of course). ;-)
Probably not. ;-(
Oh, yes, love em. A mate was riding his motorbike when someone threw their cigarette butt out of the car window and it landed in his (slightly open) jacket. He caught the guy up at the traffic lights and explained what had just happened. The guy seemed far from bothered, let alone apologetic so when the lights changed, most people drove off, except this particular litterer, who had fallen asleep at the wheel for some reason. ;-)
My first lesson on that was as a fairly young kid when I *sneaked* a sweet wrapper out of the rear window of our Austin A40. Unfortunately for me (or fortunately as it turned out from a social responsibility POV), Dad spotted it, pulled over and sent me (some way) back to retrieve it.
Normally, Mum would 'collect' all our wrappers and empty things and ensure they were disposed of properly. ;-)
Daughter used to remove empty bottles and cans from where they had been stuffed in hedges by her fellow school students (when she was walking behind them and saw them doing it) and take them home. Some of them also got the message.
If anyone littered in school in her presence she would mention that 'you seemed to have dropped something' and again, they generally picked it up. Now some of that may have been down to her being one of the few who could 'manage' ... and was the best friend of the school 'psychopath in the making' and who rarely needed much of an excuse to kill someone.
"She asked you to pick that up ... "
Cheers, T i m