I feel like I'm going crazy. When I get in my car and turn it on, BEFORE I move, while still parked, sometimes it sounds like there's an open window right behind the driver seat. I have quadruple checked to make sure door is closed and windows are tightly closed but it still is there. Obviously, when I start moving, it's drowned out by road sound but I'm just wondering what it is and if anyone else has encoutered there. I'm wondering if it's molding or maybe the AC vent up there, but it sounds like it even with AC off and recirculation off.