https://parsec.gg/p/awD_ka You will have to sign up in order to join beamng.drive online multiplayer session (credit to @ThreeDTech21 for the start of this)
All we need now is Splitscreen! Parsec solves the networking aspect splendidly. Had some fun times with my brother but it's hard to keep control and stay focused when the camera zooms out on the shared camera.
A long while ago another forum member and I did this with the Nvidia streaming..thing, the lag was actually not that bad! Shame there's not much we can do about the cameras. (sadly splitscreen is a no-no for this game) It brought some hilarious moments, it's pretty fun