One other thing about the material used in those spray on bed liners...... They do have quite a protective nature to them.
There was a news story a few months back where they were testing the durability of the material by spraying it on a cinderblock wall on a test room.
They set off explosives next to 2 identical walls, one untreated and one treated.
The untreated wall was destroyed and caved in on a test dummy seated at a desk next to the wall.
The treated wall bowed slightly, but did not fall. It made the wall more indestructable, so much so that the military is looking at its potential uses.
The funny thing is that people joked about painting their cars with the stuff to make them dent proof (based solely on the results of the bed-lining, not the bomb testing.)
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