The Iron Horse transport ride is a Steam Train Railroad variant. It has a higher rider capacity and modified sound patterns, along with a paint scheme that differs from the normal Connie Express.
The locomotive is loosely inspired by North Pacific Coast Railroad #12, "Sonoma", as stated during a developer stream.
The Iron Horse returns in Planet Coaster 2, currently being the sole variant of the Steam Train Railroad available in the game. The train model has been graphically overhauled in this game, with details added or changed to make it more accurately resemble its prototype.
The manufacturer of the Iron Horse in Planet Coaster 2 is K.H. Norter, which is a play on H.K. Porter, a Pittsburgh, Pennsylvania-based firm that manufactured a variety of locomotives from 1866 to 1950, which were sold to railroads all over the world.