Engine of the Future / Hugo and the Airship

Engine of the Future / Hugo and the Airship was to be a two-in-one book but it was cancelled for unknown reasons.

Plot
It’s all about mysterious adventures and extraordinary engines in this new Thomas & Friends two-books-in-one paperback—plus stickers! Train-loving boys and girls ages 3 to 7 can read the first story, then flip the book over for another exciting tale about Thomas and his engine friends, based on TV episodes collected in the latest DVD. Includes more than 50 stickers—a train lover’s bonus!

Characters
The rest of the Steam Team and Sir Topham Hatt would have been likely to appear.
 * Thomas
 * Hugo

Trivia

 * This book was originally meant to be released on 2 January 2017, but it was pushed back a year to 2018 and then again to 23 July 2019.