I drove my car for an hour and 1/2 straight this past weekend to a friend of mine's house. Upon arrival I noticed no "swooshing" noise whatsoever. Over the coarse of the trip something happened to the belt which is now "swoosh" free!!!Do you guys see any coincidences? I still think it is somehow climate related as many cars in Canada have this problem in the cold season. What do think about short trips (my commute from school to work or home) causing this condition? As I said before, everything is fine with the car itself. Belt is fine, no cracks, fraying, proper tension etc... What do you guys think about this???????

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1989 300CE - 269,000 km
1994 SL600 - 59,000 km