In about 1982 (or so) I had a neighbour ("neighbor" in US of A) who taught a course in heavy-hauling, commercial truck operators etc.
They were having a Road-e-o and he conned me into going out to watch. While there, I got conned into signing up as a competitor.
Various classes for school buses, long distance (Greyhound-type) buses, single unit trucks, semi-trailers, and combinations (more than one trailer)
I figured "heck if they can , I can should be able to figure it out, too!"
Well, I actually came second against a bunch of pros in a couple of classes, in the top 10 in another and got laughed at in one, but I refuse to talk about my "skills"
at backing a combination around a turn and then into a loading dock!