Thinking about a monorail for your city? Think again, yours is not the first small city in the world faced with a sudden ambition for a monorail. Woah! So to put this into perspective we thought it might be useful to report on the discussions in another place and another, the city of Springfield in the USA, the home of the Simpsons, models of ecology. A great opportunity to learn from the experience of others. Let’s have a look.