Yesterday I was waiting behind a car at the traffic lights. A hand appeared outside its driver's window and casually dropped a matchstick on to the road. I was mildly disgusted by this uncivic behaviour, but worse was to follow: a couple of seconds later, the still-smouldering matchstick was joined by an empty cigarette packet.
To add insult to injury, a big plume of smoke then emanated from the car, even as the culprit gave me a bored look in his rear-view mirror.