

Not sure, what the American thing was doing, but the European system would dispose of the poop very slowly, likely a litre per 100 km or so, droplet by droplet, and well burnt as long as the engine/exhaust is hot enough. I don’t think that that would do much to the environment, compared to the trains where the crapper was basically a hole in the floor. In those days, we didn’t have dump stations everywhere. Now, it would surely be unnecessary.




If it lasts 30 years, it will not fly with the industry and the concept of planned obsolescence.