@OP - IIRC there's one you can find around if you install the AutoTsar Trailer mod:

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2282429356

I have installed it but haven't had any luck yet in finding it.

Take into consideration that:

1- reading into comments on that mod page it appears that if you load a vehicle into that trailer, when you unload it, it might not be the same vehicle (part wise);
it seems that basically the unload mechanic works by generating another random vehicle of the same model, so you might have different parts quality, condition and/or different parts alltoghether aside from of course different vehicle colours/textures;

2- again in the mod page comments someone discussed a possible fix, suggesting to add a way to store a cache with all the vehicle parts info etc, but as far as I could see, the mod author never replied nor took it into consideration, at least for B41.

Maybe @KI5 is able to look into it and to add such a trailer with such a feature (if they haven't already)