Elon Musk explains why Teslas Cybertruck windows smashed during presentation

The unveiling of Tesla’s Cybertruck last week was full of surprises, but none more shocking than the moment when lead designer Franz von Holzhausen smashed two of the vehicle’s “armor glass” windows onstage with a metal ball. It certainly wasn’t the result CEO Elon Musk was expecting, who could be heard muttered “oh my fucking god” under his breath before being forced to complete his presentation in front of the fractured panes.

But Musk says he knows what went wrong, and explained things on Twitter. Right before the metal ball test, von Holzhausen smacked the door with a sledgehammer on stage to prove its durability (and unlike the glass, it was fine), and Musk says this impact “cracked base of glass,” which is why the windows...

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