Car crashing is all good, it gives you data that can save lives, eventually, BUT, I have one concern. Why crash cars into walls, why not create a real world scenario and accelerate two Cars, remote controlled ofcourse, of either same or different class towards eachother, collide them and then collect the data gathered thru crash dummies inside.
As they say, you can learn alot from a dummy.
Plus little kids have a better idea of crashing cars, have you ever notices, how they use two toy cars bring them from opposite sides, head on and crash them and make bang bang sounds. In most real life accidents, the cars do not crash into walls, but into each other, either head on, rear end, side impact, etc. The real life car crashes have different forces acting on the human body, as oppose to just crashing a wall to a concrete wall. Maybe crashing to a wall will cut cost by Half, but why not do something as close as real life scenario, when the whole point of such crash tests is to analyze the impact in real life accidents, and make cars safer and save lives.
In head on collisions, both cars absord the impact of the collision and therefore have different forces acting on the human body, where as crashing to a wall, the wall is still there, but the cars front end resembles a flat look of the wall.
Maybe I am not aware of all types of crash tests, just wondering.