Railtraxx 6400
Designed as 8 studs wide display model, but with some small modifications suitable for 9V or RC track (see below). These engines were produced in Germany for the Dutch Railways and some of them later sold to the Belgian Railtraxx freight transport company.The model has 2 complete 2-axle bogies, so you can display it without an additional motor/bogie. Including nice matching minifig.
To use the engine on a 9V or RC track, you have to place the 4 ladders on the bogies/motor.