The Amish use gas for a number of things from their gasoline powered wringer washers to the generators they use to charge the automobile batteries they use to run the lights on their buggies. Of course, it all depends on their individual church district. The rules vary widely. Some groups allow gas powered lawn mowers and some don’t.
These guys were definitely some kind of group.
Father had a beard and hat. Suspenders where light colored homemade looking cloth. The pants were like a big square flap buttoned on both sides.
maybe Mennonites. Didn’t really want to stare them but the haircuts were very noticeable.