The SL C5, colloquially the Silver Arrow (Swedish: Silverpilen), was a type of subway train used in the Stockholm metro, Sweden. It was a prototype train produced in one example of 8 cars and was never painted, instead keeping its aluminium "silver" finish. It was rare in trafic and often ran during the night, giving it a mystic appearance, resulting in several urban legends alleging sightings of a silver colored ghost train, simply known as the Silver train, but also "the Silver Arrow".
