The official servers use no mods (except BeamPaint) for 2 very important reasons: Compatibility & Security.
Beginning to add in other mods creates the potential for things outside of our control to be broken in the event of a BeamNG update, and also could potentially take a small piece of the control of that server’s security out of our hands as well.
For those reasons, we will not be adding custom mods such as vehicles and/or vehicle modifications into the official servers at this time.