The script will create a slow motion effect in your game if any of these conditions are met:
Any car near you flies/crashes in the air;
An explosion occurs;
Something crashed into you (ragdoll).
To prevent infinite slowdown, there is a waiting period after the effect triggers. This way, you won't be stuck in slow motion until the chain of explosions stops, or the car crashes into the ground after tumbling in the air for twenty seconds.