Tesla Cybertruck's 'unbreakable' Armor Glass breaks during demo

A strength test of the "Tesla Armor Glass" on the automaker's 'Cybertruck' failed after a volunteer threw an object at it to demonstrate how "shatterproof" it was. Two of the all-electric truck's windows cracked following the demonstration. Laughing at the incident, CEO Elon Musk said, "It didn't go through," and added that during prior tests the glass did not break.