Inertia switch

When a car is in a hard enough impact, a switch will cut power to the fuel pump shutting the car off. I think this would be a cool detail to add to the game.

 

Correct me if I am wrong, but doesn't the newer ETK's already do that?
If not, then it's a good idea

 

They dont shut the engine off they just apply the breaks and yea it is a neat idea