Demo Day is the twentieth episode of the ninth season .
Jacob, Sierra, and Kira convince Mr. Hatt to let then hold Sodor's first ever demolition derby.
This episode was originally going to be the twentieth episode of the second season. It was then moved forward become the eighteenth episode of the second season, then to the nineteenth episode of the ninth season, and finally to the twentieth episode of the ninth season.
Each of the demolition derby cars' appearances is based on that of an engine.
Episodes Meg and Molly | The Amusement Park | Extraordinary Engines | Hugo and the New Engine | Dylan's Backstory | Bill, Ben, and BoCo | Duck's Special Special | The Substitute Controller | All About George: A New Beginning | James' Jealousy | Another Day Gone | Greens vs Yellows | Mavis Figures It Out | Rosie's Secret | Iron Horse | Vandals | The Return of Vinnie | Oliver and the Mainland Exploration | Jacob, Sierra, and Kira's Experience in Driving | Demo Day | Murdoch and Arthur | Daisy and Harvey | It's Possible... | Philip the Lucky Engine | Good Effort | Arthur Takes the Kipper
Transcripts Meg and Molly/Transcript | The Amusement Park/Transcript | Extraordinary Engines/Transcript | Hugo and the New Engine/Transcript | Dylan's Backstory/Transcript | Bill, Ben, and BoCo/Transcript | Duck's Special Special/Transcript | The Substitute Controller/Transcript | All About George: A New Beginning/Transcript | James' Jealousy/Transcript | Another Day Gone/Transcript | Greens vs Yellows/Transcript | Mavis Figures It Out/Transcript | Rosie's Secret/Transcript | Iron Horse/Transcript | Vandals/Transcript | The Return of Vinnie/Transcript | Oliver and the Mainland Exploration/Transcript | Jacob, Sierra, and Kira's Experience in Driving/Transcript | Demo Day/Transcript | Murdoch and Arthur/Transcript | Daisy and Harvey/Transcript | It's Possible.../Transcript | Philip the Lucky Engine/Transcript | Good Effort/Transcript | Arthur Takes the Kipper/Transcript
Galleries Meg and Molly/Gallery | The Amusement Park/Gallery | Extraordinary Engines/Gallery | Hugo and the New Engine/Gallery | Dylan's Backstory/Gallery | Bill, Ben, and BoCo/Gallery | Duck's Special Special/Gallery | The Substitute Controller/Gallery | All About George: A New Beginning/Gallery | James' Jealousy/Gallery | Another Day Gone/Gallery | Greens vs Yellows/Gallery | Mavis Figures It Out/Gallery | Rosie's Secret/Gallery | Iron Horse/Gallery | Vandals/Gallery | The Return of Vinnie/Gallery | Oliver and the Mainland Exploration/Gallery | Jacob, Sierra, and Kira's Experience in Driving/Gallery | Demo Day/Gallery | Murdoch and Arthur/Gallery | Daisy and Harvey/Gallery | It's Possible.../Gallery | Philip the Lucky Engine/Gallery | Good Effort/Gallery | Arthur Takes the Kipper/Gallery
Characters With Main Roles
Meg | Molly | Dylan | Hugo | Bill and Ben | BoCo | Duck | Jacob | Sierra | George | James | Greg | Harvey | Bulstrode | Marie | Brady | Mavis | Rosie | Toby | Thomas | Annie and Clarabel | Vinnie | Oliver | Kira | Murdoch | Arthur | Daisy | Beresford | Philip | Richard Hatt
Season 1 Back In Service | Rosie, Jacob, Sierra, and the Troublesome Trucks | Homesick | Childhood Memories | The Best Start to Summer | Jacob and Rylie's Blue Mountain Adventure | A Surprise for Jacob | Jacob and the Famous Visitor | Jacob's Unlucky Day (
Season 2 Kids and Quarrels | Paige Returns | Jacob, Sierra, and Rylie's Backstory | Football
Season 3 The First Day | Jacob's Babysitting Adventure | Homecoming | Jacob, Mallory, Paige, and the Election | Jacob and the Bully | Jacob's Old Friend | The Talent Show | Jacob's Trip to the Hospital | Jacob and Connor | District Chorus | Jacob and Sierra's Big Scene | A Bad Day for Jacob | Jacob Gets Cleared | The Playoffs | The Championship | All is Revealed | The Concert | The Music of March | The Last Day
Season 4 Heroes | Jacob and the Ghost Engine | Tale of the Missing Christmas Presents | Jacob and Skarloey
Season 5 Jacob and the Christmas Party | The Game
Season 6 A Trip to Misty Island | The First Tour | Rain | A Trip to the Park
Season 7 A Cold Day for Jacob | Jacob, Douglas, and Meg | Jacob the Grown-Up
Season 8 Jacob, Meg, Sierra, and the Snow | Jacob's First Skate | Jacob, Sierra, and Bradford | Best Friends Day | Jacob, Sierra, and Hugo | Jacob, Sierra, and Lexi | Jacob, Sierra, and Theo | Journey Beyond Knapford | Jacob, Sierra, and Merlin | Jacob and Sierra's Birthday Shock
Season 9 The Substitute Controller | Jacob, Sierra, and Kira's Experience in Driving | Demo Day
Season 10 The Sodor Awards
Season 11 Robot Wars Live | Jacob's Big Break | Battlebots Filming Day | Jacob and Connor's Busy Day | Jacob, Sierra, and the Dogs | A Doggy Discovery
Season 12 Jacob and Rebecca | Dreams
Crystal Island Adventures Jacob and Mr. Collins
Stories of the Sophomores The Second First Day | A Second Homecoming | Jacob and Meg | Jacob and Meg's Halloween Adventure | The Competition | Jacob and Emma | Jacob Goes Missing!? | Jacob and the Cool Kids | The New Kid | Elijah vs Jacob | Jacob and Elijah
War on Sodor The Project | Thomas' Account | Edward's Account | Merlin's Account | Wilbert's Account | Sir Topham Hatt's Account | Dowager Hatt's Account
Specials Sodor and the Storm Part 1, Sodor and the Storm Part 2, Sodor and the Storm Part 3 | A Trip to America | The Search for the Missing Friends