I find it interesting how different Amish groups will accept various amounts of technology. There's a group just outside of Green Bay, WI. (one of many groups scattered around WI) One day I was driving through that area and I saw 2 different rigs setup the same way. A team of horses pulling a wagon with an engine power plant, which pulled, and drove a modern Haybine. I thought I was seeing things when I saw the first one, then there was another one just down the road. The operator was standing next to the power unit to drive the horses and control the implement behind him.
And then other areas they will only use horse drawn, ground driven, implements.