i have 2 month old S 90D. It has a characteristic which I hope is just unique to my car. It is a problem which occurs on damp days when the windows start to mist up. After the heater and front screen heater is turned on, the front windscreen mists up totally in a couple of seconds preventing visibility. After about 20 seconds when the heat comes through the windscreen clears. The first time this happened I nearly crashed. Has anyone else experienced this? I think you can tell that this is a car designed in a place where it rarely rains. Here in Northumerland the rear window is rarely useful as it doesn't have a wiper, the rear view camera is always dirty and the wing mirrors don't seem to clear of rain easily.