Around where I live I think there's is a daily competition, well two actually. In the morning it's who can turn their lights off first, and in the evening who can leave it the latest before they have to turn their lights on.
Not sure how the prizes are claimed but they must be worth something judging by the vast number of motorists who play these games.
In answer to the first part of Bob's question, I thought fog lights, be they front or rear, are only to be used when visibility is below 100 metres, or is it yards?
I'd like to know if the average motorist knows how long 100 metres is? Personally, I'd like to see all drivers who buy a car with fog lights be given an IQ test to prove they are up to the resposibility of being able to use them!