I just got a 2010 Accord EX-L V6 (auto transmission) and everything went great with the test drive and a first hour-long highway trip. However, the next day we were driving the 6.5 hours back home and there was immediately an extremely loud whistle that occurs starting at 55mph and getting louder up to 80mph. It sounds exactly like a tea kettle boiling and appears to be coming from somewhere between the windshield and the front of the car. Checked the moonroof, passenger and driver doors and no sound coming from them. When I get behind another car on the highway (drafting), the sound goes away completely regardless of speed. Running the windshield wipers makes no difference. If you open the window, you can clearly hear the loud whistle above the wind. I can't find any debris stuck anywhere or loose parts. Any ideas would be much appreciated!

C
_______

2010 Accord EX-L V6 AT

 

Also, I just tried taping up all the seals on my windshield and moonroof and there was no change in the sound.