I tried adding the addon in 2.91 but nothing happens.
I do get that on the console :
fake_module: addon missing 'bl_info' gives bad performance!: 'C:\\Users\\super\\AppData\\Roaming\\Blender Foundation\\Blender\\2.91\\scripts\\addons\\mesh2truck.py'
Modules Installed () from...
As far as I know, there's not an exact model.
But the closest you have to that is the Deuce pack, which is included in the heavy equipment content pack.
After you're done with texturing and such. You should export the model with the recommended format then use the OgreAssimp tool you can find the download link in the official Discord. I could drop the link here if you wish.
You could get yourself started by reading this doc article: Scripting
The language used is AngelScript so you might need to read about the specifics of that language.
You could also crack in the code of the AI that is used in F1 Test Track once you understand the language enough.
The original country map is BakerRanch.
There's also the Wild West.
As for train tracks, the best map I know of is Train Valley.
All of these are included in the Terrain's content pack, which you download here : Terrains Content Pack
There's actually a replay functionality into RoRBot.
I did remember looking at the documentation of it and there's was a said feature.
I'm just unable to find the place to download the bot just to see its features.
I suggest you use this cool tool to make the keymap : Windows Mapping Tool
It will create all the necessary file to make your input mapping work fully for everyone.
That's actually everything.
Don't worry.
There's ton of good stuff that come from the archives that are uploaded on the current repository.
Just look for those uploaded by Uploaded From Archives.