City of Truro
 is a steam engine who was, debatably, the first engine in the world to attain the speed of 100 mph. However, Flying Scotsman was the first steam engine to attain the speed of 100 mph that was officially recorded.


  1. Season 3 - Domeless Engines
  2. Season 4Pop Goes the Diesel (mentioned)
  3. Season 7 - A Close Shave (mentioned)


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