Little yellow Hot air engine

[844fan]

Hey all,

I wanted to ask about this for ages, but only just hit me. I am aware Richard Ince had a small locomotive he once introduced Mark Found to a yellow engine that ran on heat change a small torch placed inside ran it and it was more a concept than a scale model.

 

Now I would really love to see this engine, which was a kit engine in some better detain more the sides front and back. Not sure how prolific it was I have seen a few YouTube videos with a green one but it is on a test track, it is just a curiosity to be sure but I would really love more information about it.