Hello, just like in gta, Big truck will still move after hit lamp, before hit lamp is kinematic to not fall by gravity or by player touch, after hit, kinematic is off and lamp fall but in unity there is nothink like prop system. Truck will stop before kinematic will change to off. I tried with copy relativeVelocity in oncollisionenter and it almost work but truck will stop for 0.2 second then it will start moving again. How to make it like in gta? Smoothy?
I would think perhaps another collider set to trigger set to overlap the truck.
When the trigger enters those colliders make them not kinematic etc, it will happen before the real collision with the collider on the truck not set to trigger.
Then by the time the trucks collider hits, (which is the actual size of the truck) it will possibly react correct. Let me know how it goes!