I used to smoke, in my car, with wife and kids aboard, wouldn't dream of doing now but that was way back when.
Anyway, when I used to smoke I had a Mk 3 Cavalier and I always had the drivers window open 1'2" or so. Every morning I would get to a set of traffic lights and while waiting for the lights to change I would tip the ash off the end onto the cobweb which was a permanent fixture on the door mirror, and every day this bloody great spider would come scuttling out from the mirror case to grab it's breakfast ............ only to burn it's feet on the fag ash, let go, and leg it back into the mirror. Made my day for ages !!
Tony.