"Because the cold-rolled steel is undentable it does not allow for crumple zones that reduce the impact of the force of an accident for occupants." I'm not sur

"Because the cold-rolled steel is undentable it does not allow for crumple zones that reduce the impact of the force of an accident for occupants." I'm not sure how one thing logically follows from the other. The physics of an impact from a hang-swung sledgehammer versus a car impacting another car or a large stationary barrier are basically incomparable.