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Tesla Armor Glass patent reveals ‘bulletproof’ secret to Cybertruck durability
Tesla rolled out several new patents related to the Cybertruck today, one of them being the “bulletproof” Armor Glass that CEO Elon Musk talked about on several occasions. The Cybertruck’s durability has been one of the vehicle’s most notorious features. The patent describes the multi-layered design that Tesla will use across several of its cars to prevent owners from spending big bucks on new windshields or windows after a scratch, crack or chip.
Perhaps the most notable memory from the Cybertruck event in November 2019 was when Tesla Chief Designer Franz von Holzhausen threw a metal ball at the Cybertruck’s driver’s door glass after slamming the stainless steel exoskeleton with a sledgehammer. After claiming the glass was durable enough to sustain several blows without cracking, the window did smash with the signature broken spheres imprinted into everyone’s mind who watched the event.
(Credit: Tesla)
Elon Musk stated that Franz’s initial sledgehammer hits damaged the base of the glass, weakening them to the point that the steel balls were able to easily break it. Musk proved later that the windows really were super durable by releasing a video of Franz throwing the same metal balls at the glass right before the Cybertruck was rolled out on stage. Now, the patent explains how Tesla created durable and near-indestructible automobile glass.
According to the patent, the combination of the “multi-layer glass stack” has about a 10% chance of failure with an impact of 2 J.
Tesla’s multi-layer glass stack is comprised of the following: an inner-facing layer that has been chemically strengthened with high strength in flexibility. It measures between .5 and 1.1 millimeters thick and has an adhesive interlayer, which conjoins it to an outer-facing layer that has energy absorptive properties. The outer layer includes “non-soda lime, low-CTE, high densification glass” that measures between 2 and 5 millimeters thick. The two layers and then joined together by the energy absorbent adhesive. The outer layer is comprised of borosilicate, a low-melting-point glass made from silica and boric oxide that is more resistant to thermal shock than any other common glass.
Tesla focused heavily on the process of creating a highly durable automotive glass that would be able to withstand normal instances on the road and remain damage-free during operation. The patent states that, typically, automotive glass can be chipped, cracked, or broken without much external force; something as small as a pebble that is launched into the air by another vehicle can cause enough damage to warrant an entire windshield replacement. Tesla wanted to avoid this as windshields can be expensive and difficult to replace.
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- Credit: US Patent Office
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- Credit: US Patent Office
In fact, the external-facing layer, in some embodiments, has the ability to resist crack initiation and crack propagation, making it durable in the event of a collision or if a foul ball happens to hit some glass when you’re at your kid’s little league game. It doesn’t appear that the Cybertruck will be the only vehicle to utilize the glass, as another illustration within the patent shows a sedan.
When Musk joined Jay Leno in a Cybertruck ride that was aired on MSNBC’s Jay Leno’s Garage a year ago today, the former late-night TV show host asked the Tesla CEO why anyone would want bulletproof, armored glass on their truck.
“Because it’s badass, and it’s super cool,” Musk quickly replied. “Do you want your truck to be bulletproof or not?”
The full patent for Tesla’s Armored Glass is available below.
Tesla Cybertruck Armored Glass by Joey Klender on Scribd
News
Tesla gets new information request from NHTSA on Robotaxi rollout
Tesla has been contacted by the NHTSA regarding plans for the Robotaxi rollout and how it will handle poor weather.
Tesla has been contacted by the National Highway Traffic Safety Administration (NHTSA) regarding its planned rollout of a Robotaxi platform in Austin, Texas.
The agency sent a letter to Tesla Field Quality Director Eddit Gates, seeking more information on exactly how the company plans to operate the fleet in poor weather conditions. The NHTSA wants to know how Tesla’s technology and operational use cases will “assess the ability of Tesla’s system to react appropriately to reduced roadway visibility conditions.”
Additionally, the NHTSA said it would like additional information on Tesla’s development of technologies for use in ‘robotaxi’ vehicles to understand how Tesla plans to evaluate its vehicles and driving automation technologies for public roads.
Tesla has already started operating a supervised version of the Robotaxi platform for employees in both Austin and San Francisco. This limited rollout has completed thousands of rides already, but differs from the version it plans to roll out in the coming weeks in Austin, as it currently has a driver sitting in the driver’s seat.
Tesla says it has launched ride-hailing Robotaxi teaser to employees only
They are there to supervise the vehicle and ensure safety early on in the program.
The letter that was sent to Tesla on May 8 is part of a greater investigation that was opened by the NHTSA on October 17, titled “FSD Collisions in Reduced Roadway Visibility Conditions.”
The agency said the purpose of the “Preliminary Evaluation of FSD” was to assess:
- The ability of FSD’s engineering controls to detect and respond appropriately to reduced roadway visibility conditions;
- Whether any other similar FSD crashes have occurred in reduced roadway visibility conditions and, if so, the contributing circumstances for those crashes; and
- Any updates or modifications from Tesla to the FSD system that may affect the performance of FSD in reduced roadway visibility conditions. In particular, this review will assess the timing, purpose, and capabilities of any such updates, as well as Tesla’s assessment of their safety impact.
Tesla is required to respond to the NHTSA’s request by June 19.
INIM-PE24031-62887 by Joey Klender on Scribd
News
Potential affordable Tesla “Model 2/Model Q” test car spotted anew in Giga Texas
The recent footage featured an apparent test car that looks very similar to a vehicle that was spotted in the Fremont Factory last month.
Tesla has been very secretive about the “more affordable models” that it intends to start producing in the first half of 2025, but the company does seem to be quite busy testing something interesting in the Giga Texas complex. This was, at least, as per recent aerial footage from a longtime Giga Texas watcher.
The recent footage featured an apparent test car that looks very similar to a vehicle that was spotted in the Fremont Factory last month.
New Giga Texas Sighting
In a post on X, longtime Giga Texas watcher and drone operator Joe Tegtmeyer noted that he recently spotted a rather unique test car in the factory complex. The vehicle was under a car cover, but it was evidently missing its body panels and roof. Interestingly enough, it seemed to be shaped like a Model Y (it even had Model Y wheels), though it looked a bit more compact than another Model Y that was parked next to it.
Interestingly enough, a rather similar test car was spotted at another Tesla plant, the Fremont Factory in California, last month. Tesla watcher Met God in Wilderness, who has been posting aerial videos of the Fremont Factory for years, shared some footage from a drone flyover in mid-April. One of the vehicles captured in the flyover was an apparent test car that was parked next to fully-built Model Y and Model S vehicles. The test car in this sighting also looked like a compact crossover, and it was also missing its roof and body panels.
Tesla’s Affordable Cars
In the Q1 2025 Update Letter, Tesla noted that “plans for new vehicles, including more affordable models, remain on track for start of production in the first half of 2025.” In the Q1 earnings call, Tesla VP of Vehicle Engineering Lars Moravy stated that Tesla’s affordable cars would resemble the company’s existing vehicles, though they will be more affordable.
These comments suggested that Tesla’s affordable cars, which have been informally dubbed by the EV community as the “Model 2 or Model Q,” will look a lot like its two mass market vehicles, the Model 3 sedan and the Model Y crossover. “Models that come out in the next months will be built on our lines and will resemble, in form and shape, the cars we currently make. And the key is that they’ll be affordable, and you’ll be able to buy one,” Moray stated.
Elon Musk
Elon Musk invited to attend investment summit in Saudi Arabia: report
Musk’s reported invitation comes on the sidelines of United States President Donald Trump’s visit to the Middle East.
A planning note reported viewed by Reuters has indicated that Tesla CEO Elon Musk has been invited to a Saudi-U.S. investment forum in Riyadh, the capital of Saudi Arabia. The event is expected to be held on Tuesday.
Musk’s reported invitation comes on the sidelines of United States President Donald Trump’s visit to the Middle East.
Musk’s Invitation
As per Reuters, the upcoming investment forum is expected to be attended by some of the most distinguished people in the investment world. These include the CEOs of high-profile companies such as Blackrock, Citigroup, IBM, Boeing, Delta Airlines, American Airlines, and United Airlines, among others, the publication noted.
Considering the other attendees of the event, Elon Musk would likely fit right thanks to his leadership of companies like Tesla, SpaceX, and xAI, as well as his close ties with the Trump administration through his work at the Department of Government Efficiency (DOGE).
Musk and Saudi Arabia
Elon Musk’s relationship with Riyadh have notably improved since the start of Trump’s second term as United States president. Highlighting this improvement was Tesla’s launch in Saudi, which was held in April. Tesla’s launch was a notable event based on videos posted of the occasion, with the company showcasing some of its most exciting products, including Optimus, the Cybertruck, and the Cybercab, its self-driving robotaxi.
Tesla’s launch in Saudi Arabia, as well as his reported invitation to the upcoming investment forum, suggests that the CEO’s feud with Yasir Al Rumayyan, head of the $925 billion Public Investment Fund, has ended. The PIF Head was among the people involved in Elon Musk’s infamous “funding secured” tweet in 2018, which resulted in hefty fines and his removal as Tesla’s Board Chair. The PIF also sold its Tesla holdings and invested in another EV company, Lucid Group Inc.
Tesla gets new information request from NHTSA on Robotaxi rollout
Potential affordable Tesla “Model 2/Model Q” test car spotted anew in Giga Texas
Elon Musk invited to attend investment summit in Saudi Arabia: report
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