How did Newtons laws of motion help car safety?

how the laws of motion help the car industry in safety and what did they invent to prevent accidents happening.(other than seatbelts)|||Newtons laws of motion predict what cars will do when they hit each other, or how much force is required to stop them and make them turn corners. Since cars travel so much slower than the speed of light, relativistic formulas are not required and newtonian motion is an accurate model.