I'll second that. Many moons ago, I had a commute from Thetford to Peterborough and could either go down the A1 and along the A14 or go cross-country. The cross country route was shorter but took a little longer, but was less stressful as it avoided Cambridge. Anyway, I digress. One morning I was pootling along the back roads between Upwell and Downham Market when some fog came down. I was thinking what an utter bunch of clots the drivers coming the other way were, not having their lights on in such dismal conditions, when I realised that I too, was a clot. I moved the light switch from Auto to On and felt rather righteous.