Just a thought and forgive me for being Mr obvious but I sometimes get the feeling of a breeze if the air vent on the front drivers side is pointing towards the window and the Aircon, sorry climate whatever, kicks in I know it sounds silly and feel free to tell me to S*d off but have you turned the climate off and see if you still get the feeling of wind??
I know it sounds silly but the climate control kicked in today as I was going along and I could here the wind and then feel it and my mind jumped to this thread.
Oh and I get to "share" mine with my Missus as well, at least she calls it sharing, I call it the weekend as well!!