Wish he had allowed a bit more time to read the captions. One has to be a very fast reader to get it all. I'm still not sure I completely understand how and why he built the track the way he did. The loco is a nice bit of scratch building.
"It is one of the happiest characteristics
of this glorious country that official utterances are invariably
regarded as unanswerable."
-Sir Joseph Porter, First Lord of the Admiralty (HMS Pinafore)