Tell me seriously, you've never ridden in freezing rain and thought wouldn't it be nice if I was warm and dry? You've never wanted to go three or four miles per hour faster with the same effort?
Sure - I meant that I don't change my bicycle between seasons. I change my clothing quite a bit!
3-4 mph faster by building a huge blue thing and mounting it on my bike somehow? Can't say I've thought about it

. Actually, I took my fenders with the extra long mud flaps off -- I don't mind the rain and wetness that much, and I've ridden in tropical storms on 2 occasions. Fenders for me are just one more thing to bang around on the vertical bike rack and rub, vibrate, etc. They're annoying, and cause me to have to adjust things -- which sucks. I'm too lazy for that anymore.