This is an absolute treasure, OP.
AC modding goes in many, many directions. There are folks pushing the boundaries of photorealism with an aging engine. Folks preserving the history of tracks that are no longer around. Folks that are creating ficticious but realistically possible racetracks.
And then there are the madmen who construct slaloms that evoke the best of Ridge Racer and other 32/64-bit era racing games. Who craft corners and dips and climbs and scenery not based on what's realistic for an FIA Grade Whatever track, but on what will provide the driver with joy.
There aren't nearly enough of that kind of modder.
I agree with Raymond that some of the graphical elements look a little rough in this beta stage - getting some serious Stunt Race FX/Wild Trax vibes in parts with the minimal texturing. And I'm sorry that I'm not an artist myself and therefore can't offer you any practical criticism to help improve in that repsect.
All I can do is ask that you keep at it, because racetracks where the author's imagination has run wild are too few and far between.
10/10 - would yeet myself from the hotel cliff onto the shipping container chicane again.