Yes, it works via Insim. It is not private but it is not really a functional program.
It was just quick idea I had while doing this:
https://www.youtube.com/watch?v=K-ppxFYI-_8
(
https://www.lfs.net/forum/thread/86722 )
Principle works like this:
Insim has commands for adding objects and for removing objects.
With these commands, it deletes the old tire and adds a new tire at slightly different position. This works fast enough that it looks like continuous movement.
In singleplayer it is much smoother but the replays do not work (iirc: "out of sync") so tried in mp.
In multiplayer there was some stuttering as seen in video, I assume it would be smoother if the Insim would run on the LFS server instead of on a players computer.
Interesstingly it even worked okay if you rammed the object.
The principle of manipulating objects has some potential I think, for example with those marshal figure objects: There are 3 marshal types: normal, left hand raised, right hand raised.
So one could script marshals that "raise their hands" if there is a yellow flag.