Maybe its only when my Mirage is happy, but it will whistle to me under the right circumstances. The whistle comes from the front lower passenger side. I assume I have a messed up belly panel or something like that. With the wind and car at the speed right, it whistles to me like someone blowing across an open bottle, but higher pitched. I haven't had the chance to look under the car and see what may be out of place. I'll try to get a audio clip if I can. I tried it once and the phone didn't seem to pick it up.
Anyone else have this?