One of many popular know disigns of locomotives in American railroad companies was the 4-6-0. Chesapeake class of ten wheeler. This locomotive was an idea that I thought of after I got my first lego train set The Constitution Train Chase.
The locomotive comes with power functions, a loop of track, a water tower, four passengers, and a conductor. One problem I had was having room to add an engineer to the cab of the train because it is taken up by the infrared receiver.