Hello!
This track was not built by a human!
Instead, it was generated using my program that I built specifically for generating TM tracks from scratch. The main route is completely unaltered from the generated version, I only added all the decorations on the map to make the track more enjoyable do drive. Some transitions can feel completely unsmooth or not logical, but I'm still pretty proud of what it has achieved.
The program itself is using neural networks that were trained to generate such tracks.
Learn more about it here:
https://github.com/donadigo/tmtracknn
Have fun!