Every time I wash my car, no matter how dry I think I am getting my IS, inevitably I end up with a streak of water spots just below the mirror on the driver's side ---- and to a lesser degree on the passenger's side. I swear I have the car bone dry, then maybe I take it out three or four hours later, and the streaks appear. I think maybe some water gets trapped in the side mirrors and then it comes spraying out once the car is in motion. Anyone else have this problem? Any suggestions for the ultimate way to dry your car?