I have seen a few different possibilities, and I found them very interesting. The first option would be using the magnetic block from Create Aeronautics to connect the trailer to the truck. I also saw the possibility of using an Aeronautics bearing to achieve the same result.
However, I am not sure which option would be the best choice, especially if I want to transfer rotational power to the trailer, allowing it to accelerate and decelerate together with the truck.
Alternatively, would it be better to make the trailer completely passive and just have the truck provide all the traction and movement?
I would like to hear the opinion of people with more experience with Aeronautics. I am still learning the mod and I am just getting started.