AI illustration: Cybertruck shatterproof glass
TeslaCars & Energy
Missed

Cybertruck shatterproof glass

“We threw wrenches, we threw everything. We even literally threw the kitchen sink at the glass and it didn't break.”
— as reported (paraphrase) · Nov 21, 2019 · Cybertruck Unveil, Nov 21 2019 — Rev official event transcript ↗
What actually happened

During the Nov 21 2019 Cybertruck unveil, the 'armor glass' demo failed when Franz von Holzhausen's steel ball shattered both the driver and rear windows on stage; Musk later said a prior sledgehammer hit had cracked the glass base. Cybertruck armor glass shattered, Musk explains (ABC News) ↗

The Progression

Nov 21, 2019
The promise: “We threw wrenches, we threw everything. We even literally threw the kitchen sink at the glass and it didn't break.” · Cybertruck Unveil, Nov 21 2019 — Rev official event transcript ↗
Nov 21, 2019
Deadline passed. During the Nov 21 2019 Cybertruck unveil, the 'armor glass' demo failed when Franz von Holzhausen's steel ball shattered both the driver and rear windows on stage; Musk later said a prior sledgehammer hit had cracked the glass base. Cybertruck armor glass shattered, Musk explains (ABC News) ↗
Today · Jul 16, 2026
Status: Missed · 2,429 days past due. Never happened.

At the Cybertruck unveiling on November 21, 2019, Musk presented the truck's windows as breakproof 'armor glass.' The claim failed on stage in real time — the glass shattered during the live demonstration. The prediction was made and missed on the same day.

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LAST CHECKED 2026-07-11

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