Quite a while ago I took a ride on a Norfolk & Southern steam train. I rode in a restored club car. I asked one of the fellows, who helped restore the car, how waste was handled. Was it still just dropped on the tracks when the train was moving? He said the car had a new system, large holding tanks. They were designed so the the liquid part quickly evaporated & the remaining solids were digested by flies. At the time the explanation seem a bit strange. Now I understand how & why the system worked.
