I found this on www.aircraftresourcecenter.com under their test post clubhouse section. Not sure what language the kids are speaking as they altered the rails.
I hope the link works as I could not get it to copy and paste, that’s why I listed where I got it from. I think you will find it would have sent the passengers on a wild ride!
The film is a commercial for Hydro which tries to recrute young people to sience education. The slogan is “There are many young engineers out there. We can’t wait to see them grow up.”