My suggestion for a mod for anyone knows how to script. I would personally love to see this come true, and i thing other people and youtubes will enjoy it also. A kill cam mod for your car, so when it hard detects collision it goes to a cinematic camera & instant slow mo. Kind of like if you picture the finishin move in MK, or a sniper kill in sniper elite, or even those war thunder kill cams that show the replay.
If a significant portion of a car comes in contact with something else at a relatively high speed (i.e. There is at least a 30 mph speed difference between the vehicle and the other object), or if the vehicle unnaturally decelerates quickly from a high speed.