Good find, I did wonder why there was no example of the sound of this engine.
That really does sound like a jet plane and I thought it would be more screechy. The chuffing steam train after it made for a great contrast between old and new.
Imagine a jet loco made with today's technology: only one carriage and likely quite small too, with much more power. Traction could be an issue though if it's not heavy enough.