You can run scripts after teleport by invoking functions to carry initials through for things like vehicles.
So in theory if this were to still happen, it would be possible to on new world, spawn the same exact car, and have it seat the player and then simulate the same velocity and direction from the previous world, also attributing the chassis ownership and so on to the right player.
It would just need a solid few frames on the new parallel LuaU engine to then have everything look smooth. So it would look like a lag spike or a disappearing car (maybe), except that is better than having super sized maps like Vehicle Simulator where the FPS is 30 as compared to Driving Legends at 60 FPS.