Trainspotting

Trainspotting was a hobby that the Doctor had participated in at some point during his long life, but which he was "rather rusty" at by his sixth incarnation. He tried to use his experience in the trade to name the model of a train he heard through a door to the 1950s. (AUDIO: The Nowhere Place) As well as having an interest in real-life trains, the Doctor also enjoyed using a model train set. (PROSE: Model Train Set)