Synchronized Horses

I saw this old stone home with the colorful fall foliage around it and pulled over to get a shot, and as I was about to pack up I heard the familiar Lancaster County clip clop of a horse and buggy coming. Ended up with about four buggies going past but this one in particular stood out because not only was it being pulled by two horses but they were in what appears to be perfect synchronized strides? I have never seen anything quite like it before.