This is funny. Buster Keaton in "Our Hospitality". Note their use of flex track.
https://www.youtube.com/watch?v=gGfShmBnMTs&fbclid=IwAR3YEt0MBSDHhSGuixO-LfS3Tp3B0Sr-NVdHJP9HmN1cagQypSKqhnUdzQg (https://www.youtube.com/watch?v=gGfShmBnMTs&fbclid=IwAR3YEt0MBSDHhSGuixO-LfS3Tp3B0Sr-NVdHJP9HmN1cagQypSKqhnUdzQg)
I laughed a lot. The level of absurdity pertaining to the train is mind-boggling.
That was a first view for me.
Enjoyed it.
If you like Keaton on the rail, here's another you might like.
https://www.youtube.com/watch?v=EiqqxyZeDXo
Ha! The little orange Poppins-esque box was great.