This construction is inspired by the tram which circulated in the streets of Saint-Etienne (France) in the fifties. Today, the Saint-Etienne trams are of course more modern, but less charming.
All the bricks used in my building are common, except perhaps the large tan windows three studs wide. The two wagons are identical. Nevertheless one is equipped with an engine and a remote control system, and the other has seats, in which passengers can sit.
I wanted my model to be solid, roughly minifig scale, and motorized. It is seven studs wide and each wagon requires around 400 pieces.