This trick consists on avoiding the enemy to steal your own vehicles. When you see enemies moving towards your empty vehicle in order to steal it, keep your mouse selecting that vehicle. As the enemy gets inside of it, because you have your mouse on it, it is still selected, meaning you can click the ''disembark'' button to make them leave that vehicle.

You have to be fast doing this, and you can only do this trick once, because the vehicle won't belong to you next time.

This trick is really weak, unless used in singleplayer, where the enemy units sometimes will not get inside that vehicle again, after getting disembarked.