Just wanted to share a something that happened to us while on a 2 lane windy country road...
When we had a 27' travel trailer, we were towing at the speed limit (55 mph I think) on a kinda windy country road. We kept hearing a "whirring" sound every so often. Both of us heard it but couldn't determine where it was coming from since it would fade in and out. Finally, when the road straightened out some, the sherriff's car that was behind us with his lights and siren blaring passed us at the fastest speed he could do I think!!!!! Never saw him back there in the mirrors. I guess every time he did try to pull out and pass, the "whirring" of his siren was the sound we could not identify!!!!