Tram
The tram, otherwise known as the streetcar or, more infamously, trolley, is the train's little brother. It is a railway vehicle that is commonly found on city streets, alongside segregated trackage exclusively used by trams. Modern-day trams run on electricity from overhead wires, though the earliest trams were drawn by horses. Cases of runaway trams are very rare, though one tram has sparked a long debate that still goes on today.
Streetcars are desired in many American cities. A lot of them once operated vast tram networks, though many did not survive through WW2. However, there seems to be a resurgence in North American tramways, with the most recent being launched in Tempe, Arizona, connecting downtown with the Arizona State University campus.
Versatility
It was once possible to go from Freeport, Illinois to Utica, New York only using trams.