Yea throwing a metal ball at the window of a vehicle typically results in what you saw there.
It really depends on how hard the metal is.
A softer metal wont do anything, but a harder substance will shatter the glass.
This hammer is too soft.
This is how security glass works against a ten pound sledge hammer.
this guy experiments, but doesnt realize that the tire iron socket edge has a higher hardness due to being tempered.
A center punch has a tempered tip and all you have to do is lean into the glass with it and it shatters the window.
A tiny piece of sparkplug ceramic shatters a car window with a little toss.
The point is, the glass is hard, and to bust it easily you need something that is HARDER which means something with a highly tempered steel or a tempered ceramic.
Next time, the reporter should use a rock hammer that geologists use to break rocks.