You watched videos? Cool...I actually crashed the damn things...and parted dozens of cars that others crashed for me.
If you're referring specifically to the 1960 Chevy head-on that made the rounds a couple of years ago...watch it again closely. That's an X frame car that was hit very specifically in the exact spot that would cause it to collapse the way it did....and also, check out the puff of rust that blows out from underneath. They didn't start with the best specimen.