Hogwarts Express

The Hogwarts Express was a train in the Harry Potter series. A scene involving the Hogwarts Express was brought to Amy Pond's mind when she and the Eleventh Doctor were chasing after a train in the TARDIS. (PROSE: Touched by an Angel)

Behind the scenes
The second book in the series, Harry Potter and the Chamber of Secrets, contains a scene in which Harry Potter and Ron Weasley chase after the Hogwarts Express in a flying.