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Science Experts Question Tesla Bioweapons Defense Claims
Some scientists quibble about claims that the Tesla Bioweapons Defense Mode can protect passengers from viruses. But all agree it is an excellent system.
Make no mistake about it, the climate control system for the Model X is superior to anything available from any other manufacturer and will do an excellent job of protecting its occupants from harmful elements in the atmosphere. Tesla describes the system this way, “The biodefense button is designed to allow clean medical-grade air into the cabin and keep contaminated air out. When deployed, it pushes the system into full fresh mode, pulling all HVAC air through the HEPA filter. The fan goes to max speed 11, pulling in enough air to slightly pressurize the cabin, keeping other air from entering Model X.”
But a few people with actual bioweapons experience quibble with the Tesla Bioweapons Defense Mode claims. The issue is not whether the system works, but whether its claims regarding viruses are accurate.
Colonel Randall Larsen, retired from the U.S. Air Force and now the director of the Institute for Homeland Security, tells Gizmodo that he is actually a Tesla fan. “I’m actually building a new house, and I had them put an electrical charger in the garage, just in case I buy a Tesla,” he says. But when told about the Tesla Model X “bioweapon defense mode” he laughed out loud and asked, “So, is Musk actually advertising this?”
To be considered a real HEPA filter, an air filter has to remove 99.97% of 0.3 micrometer particles from the air. That’s fine enough to catch bacteria like anthrax. It will also stop the plague and most other bacteria, as well as most pollen, dust, and fungal spores. “Now, if you’re worried about bacterial agents like anthrax or plague, a good filtering system would probably protect you,” says Larsen.
But viruses are much smaller than bacteria, which means they’re harder to filter out of the air. “Well, 0.3 micrometer won’t hold back viruses. It will hold back most bacteria, but it won’t hold back viruses. So, if you believe that all bio-terrorist agents are bacteria, then you’ll get an increment of protection,” said Michael J. Buchmeier, deputy director of the Pacific Southwest Regional Center for Biodefense and Emerging Diseases at the University of California, Irvine.
The influenza A virus is only 120 nanometers wide, so it can pass through even a 0.2 micrometer HEPA filter without a problem. “It’s a statistical game that we play,” said Buchmeier. “Any filter like that is going to be efficient to a degree but it’s not necessarily 100% efficient.”
Larsen and Buchmeier also point out that, by the time the passengers realize there has been a bioweapons attack, it will probably be too late to take protective action. “The key problem with the bio is knowing when it’s been released,” Buchmeier says. “You know, it’s not like there’s a big bang or something. It’s a pretty extravagant long shot anyway, you know, the idea that you’re going to be forewarned enough to implement this filter in time to prevent any exposure.”
None of which should take away from how good the Model X climate control system is at protecting its passengers. It can filter out allergens like ragweed and cedar pollen, fungal spores like the ones that cause Valley Fever, and irritants like smoke and dust. It could also filter out unpleasant roadside odor. “There are a lot of reasons why you would put a filter like that in, and only one of them is bioterrorism,” says Buchmeier.
Tesla (NASDAQ: TSLA) had coverage initiated on it by a new firm this week, and analysts said that the company’s comfort level with taking risks makes it a “must own” for investors.
Melius Research and analyst Rob Wertheimer initiated coverage of the stock this week with a $520 price target and a “Buy” rating. The price target is about 20 percent higher than the current trading price as shares closed at $435 on Wednesday, up 1.38 percent on the day.
Wertheimer said in the note to investors that introduced their opinion on Tesla shares that the company has a lot going for it, including a prowess in AI, domination in its automotive division, and an incredible expertise in manufacturing and supply chain.
He wrote:
“We see Tesla shares as a must-own. The disruptive force of AI will wreck multitrillion-dollar industries, starting with auto. Under Musk’s leadership, the company is comfortable taking risks. It has manufacturing scale and supply chain expertise that robotics startups possess more by proxy. It can rapidly improve and scale autonomy in driving, the first major manifestation of AI in the physical world.”
However, there were some drawbacks to the stock, according to Wertheimer, including its valuation, which he believes is “challenging” given its fundamentals. He said the $1 trillion market cap that the company represented was “guesswork,” and not necessarily something that could be outlined on paper.
This has been discussed by other analysts in the past, too. Yale School of Management Senior Associate Dean Jeff Sonnenfeld recently called Tesla the “biggest meme stock we’ve ever seen,” by stating:
“This is the biggest meme stock we’ve ever seen. Even at its peak, Amazon was nowhere near this level. The PE on this, well above 200, is just crazy. When you’ve got stocks like Nvidia, the price-earnings ratio is around 25 or 30, and Apple is maybe 35 or 36, Microsoft around the same. I mean, this is way out of line to be at a 220 PE. It’s crazy, and they’ve, I think, put a little too much emphasis on the magic wand of Musk.”
Additionally, J.P. Morgan’s Ryan Brinkman said:
“Tesla shares continue to strike us as having become completely divorced from the fundamentals.”
Some analysts covering Tesla have said they believe the stock is traded on narrative and not necessarily fundamentals.
Tesla launched its fastest Full Self-Driving Speed Profile with the v14.1.2 Software Update on Wednesday, as “Mad Max” mode has overtaken “Hurry” as the most spirited travel option on FSD.
On Wednesday evening, Tesla’s Head of AI, Ashok Elluswamy, teased that the v14.1.2 Software Update would be released to those drivers in the Early Access Program (EAP). He said it was a “much-awaited feature.”
Tesla just teased something crazy with the next Full Self-Driving update
Many people, myself included, believed it would be the introduction of “Banish,” which would be a perfect complement to the Actually Smart Summon (ASS) suite, as it would find a parking spot and park itself after dropping you off at the front door of your destination.
However, Elluswamy’s post on X finished with two emojis: one a race car, the other being smoke behind the car.
FSD v14.1.2, going to early access today, will debut a much awaited feature 🏎️💨
— Ashok Elluswamy (@aelluswamy) October 15, 2025
On Wednesday night, we received the v14.1.2 software update to the new Model Y, which revealed that “Mad Max” mode was the new addition:
BREAKING: Tesla Full Self-Driving v14.1.2 is here!
MAD MAX MODE is here! pic.twitter.com/AKM2VwxiXV
— TESLARATI (@Teslarati) October 16, 2025
The release notes state that:
“Introduced new speed profile MAD MAX, which comes with higher speeds and more frequent lane changes than Hurry.”
It is pretty interesting that Tesla would introduce yet another speed profile that is even faster and more aggressive than “Hurry.” Personally, I’ve found Hurry to be realistic in terms of other drivers and their aggressiveness, speed of travel, and overall lane change behavior, especially on interstates.
Mad Max mode will be an interesting adjustment.
Tesla CEO Elon Musk first talked about Mad Max mode back in 2018 in posts on X, first mentioning the feature with the Tesla Semi:
It’s real pic.twitter.com/L9h3F86Guo
— Elon Musk (@elonmusk) June 25, 2018
Musk then teased Mad Max mode in 2019 with an early Autopilot update, stating that it would be an ideal option for aggressive traffic seen in places like Los Angeles. There was formerly a mode of the same name back in the late 2010s:
Are you on Mad Max Mode? This may be too meek for places like the LA Freeway …
— Elon Musk (@elonmusk) April 6, 2019
Now that it’s here, we’ll be testing it very soon and giving you a good idea of what to expect when it releases to others in the coming weeks.
Update 9:56 p.m. ET: We got it…
Tesla launches ‘Mad Max’ Full Self-Driving Speed Profile, its fastest yet
Tesla just teased something crazy with the next Full Self-Driving update, which will be released to Early Access Program (EAP) members today.
Tesla just recently released the v14 Full Self-Driving update, and it followed up just a few days later with v14.1.1.
The subsequent release helped refine a handful of things, especially an issue with stuttering at intersections and overall indecisiveness, but it was more of a smoothing over of the initial v14.1 Full Self-Driving release.
However, on Wednesday evening, Tesla’s Head of AI, Ashok Elluswamy, said that the company would be releasing v14.1.2 to EAP members today, and that it would “debut a much-awaited feature.”
He followed that up with a racecar emoji and a smoke emoji, potentially hinting toward something speed-related. However, it could mean something totally different.
FSD v14.1.2, going to early access today, will debut a much awaited feature 🏎️💨
— Ashok Elluswamy (@aelluswamy) October 15, 2025
Some suggested it was potentially a new Speed Profile that could rank above the “Hurry” option, but that seems unnecessary. As far as other features that have been teased, one that definitely comes to mind is the “Banish” feature that was recently teased by CEO Elon Musk.
Banish is essentially the finishing touch to Tesla’s Actually Smart Summon (ASS), which launched earlier this year.
While ASS will bring your car to your location using the Tesla app on your phone, Banish does just the opposite by dropping you off at the door of your destination and finding a parking spot on its own.
Elon Musk teases ‘Banish’ feature to pair perfectly with Summon
This was recently teased by Musk yet again, as he said earlier this month that Full Self-Driving would be capable of it very soon.
Based on what we’ve seen out of v14.1 and v14.1.1, there is some potential that Banish could be released and could be the feature that Elluswamy is hinting toward, although there is no direct evidence of that.
Luckily, I was able to get into the EAP, so as the feature is released and the Release Notes are available, we’ll be able to report on exactly what feature is on the way.
Tesla’s comfort level taking risks makes the stock a ‘must own,’ firm says
Tesla launches ‘Mad Max’ Full Self-Driving Speed Profile, its fastest yet
Tesla just teased something crazy with the next Full Self-Driving update
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