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Tesla’s ‘Bioweapon Defense Mode’ is proving invaluable to owners affected by CA wildfires
When Elon Musk initially talked about the Model X’s “Bioweapon Defense Mode,” the company’s skeptics dismissed the feature as a simple gimmick. For owners of the company’s electric cars currently affected by the raging wildfires in CA, though, Bioweapon Defense Mode has become a welcome blessing, allowing them and their passengers to breathe clean air despite the worsening air quality outside.
California is currently facing its most destructive fires in the state’s history. As of Friday, the northern California city of Paradise has already been lost to the blaze. More than 6,700 structures have also burned to the ground in northern CA’s Camp Fire on Thursday and Friday. At least nine people have perished against the onslaught of expanding wildfire, and more than 250,000 people have been forced out of their homes as well. Despite authorities’ best efforts, Los Angeles fire officials noted on Friday afternoon that the blaze remains “zero contained.”
Reports from members of the Tesla community living in areas affected by the wildfires have noted that their vehicle’s Bioweapon Defense Mode has effectively maintained the air quality inside their cars. One such owner, Andrei Bulu, even posted a couple of pictures on social media showing the air readings from inside and outside his Model X as he was driving through the Bay Area, which is being affected by the fire in Paradise. As could be seen in the Model X owner’s post, the air quality readings improve dramatically when his electric SUV’s windows were up and Bioweapon Defense Mode was enabled.
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- [Credit: AndreiB/Twitter]
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- [Credit: AndreiB/Twitter]
Tesla’s Bioweapon Defense Mode allows occupants to breathe clean air. [Credit: AndreiB/Twitter]
Other Tesla owners driving in areas currently affected by the CA fires have shared similar experiences as well.
https://twitter.com/teslaamit519/status/1061056967609790464
Bioweapon Defense Mode incited a notable amount of lighthearted laughter from the audience when Elon Musk announced the feature for the Model X. During the vehicle’s unveiling, Musk candidly stated that the function is possible due to the Model X’s incredibly large HEPA filter, which is around ten times as large as those of a regular fossil fuel-powered car. Tesla noted that Bioweapon Defense Mode, which was later added on the Model S, is “100 times more effective than premium automotive filters, removing at least 99.97% of fine particulate matter and gaseous pollutants, as well as bacteria, viruses, pollen, and mold spores.”
In true Tesla fashion, the company’s skeptics were notably unimpressed with the feature, with many claiming that Bioweapon Defense Mode was but a marketing statement. Tesla later debunked these claims by holding a controlled test of a Model X inside a bubble contaminated with extreme levels of pollution (1,000 µg/m3 of PM2.5 vs. the EPA’s “good” air quality index limit of 12 µg/m3). Within two minutes, the Model X’s HEPA filtration system had scrubbed the air inside the all-electric SUV, and in the following minutes, even the air around the vehicle started getting cleaner.
If Tesla can help people in California wildfire, please let us know. Model S & X have hospital grade HEPA filters. Maybe helpful for transporting people.
— Elon Musk (@elonmusk) November 10, 2018
While Tesla’s electric car owners are able to breathe clean air despite the CA wildfires due to their vehicles’ Bioweapon Defense Mode, Elon Musk has stated that the company’s electric cars might prove helpful in moving people away from areas compromised by the blaze. An email Musk sent to employees reportedly even encouraged Tesla workers to provide assistance to the ongoing rescue efforts if they can, and not worry about compensation.
Over the years, Tesla has developed a reputation for helping out when it is able. Amidst the onslaught of this year’s hurricanes, Tesla provided temporary free unlimited Supercharging and a range upgrade to owners of Model S 40, 60, and 70 vehicles, enabling them to leave hurricane-affected areas. Elon Musk, for his part, also continues to provide some humanitarian aid as well. Just last month, it was revealed that Musk had been helping Flint, MI by giving the necessary funds to install water filtration systems to the district’s school buildings.
Tesla has officially launched public Robotaxi rides in Austin, Texas, without a Safety Monitor in the vehicle, marking the first time the company has removed anyone from the vehicle other than the rider.
The Safety Monitor has been present in Tesla Robotaxis in Austin since its launch last June, maintaining safety for passengers and other vehicles, and was placed in the passenger’s seat.
Tesla planned to remove the Safety Monitor at the end of 2025, but it was not quite ready to do so. Now, in January, riders are officially reporting that they are able to hail a ride from a Model Y Robotaxi without anyone in the vehicle:
I am in a robotaxi without safety monitor pic.twitter.com/fzHu385oIb
— TSLA99T (@Tsla99T) January 22, 2026
Tesla started testing this internally late last year and had several employees show that they were riding in the vehicle without anyone else there to intervene in case of an emergency.
Tesla has now expanded that program to the public, but it is currently unclear if that is the case across its entire fleet of vehicles in Austin at this point.
Tesla Robotaxi goes driverless as Musk confirms Safety Monitor removal testing
The Robotaxi program also operates in the California Bay Area, where the fleet is much larger, but Safety Monitors are placed in the driver’s seat and utilize Full Self-Driving, so it is essentially the same as an Uber driver using a Tesla with FSD.
In Austin, the removal of Safety Monitors marks a substantial achievement for Tesla moving forward. Now that it has enough confidence to remove Safety Monitors from Robotaxis altogether, there are nearly unlimited options for the company in terms of expansion.
While it is hoping to launch the ride-hailing service in more cities across the U.S. this year, this is a much larger development than expansion, at least for now, as it is the first time it is performing driverless rides in Robotaxi anywhere in the world for the public to enjoy.
Tesla has scheduled its Earnings Call for Q4 and Full Year 2025 for next Wednesday, January 28, at 5:30 p.m. EST, and investors are already preparing to get some answers from executives regarding a wide variety of topics.
The company accepts several questions from retail investors through the platform Say, which then allows shareholders to vote on the best questions.
Tesla does not answer anything regarding future product releases, but they are willing to shed light on current timelines, progress of certain projects, and other plans.
There are five questions that range over a variety of topics, including SpaceX, Full Self-Driving, Robotaxi, and Optimus, which are currently in the lead to be asked and potentially answered by Elon Musk and other Tesla executives:
- You once said: Loyalty deserves loyalty. Will long-term Tesla shareholders still be prioritized if SpaceX does an IPO?
- Our Take – With a lot of speculation regarding an incoming SpaceX IPO, Tesla investors, especially long-term ones, should be able to benefit from an early opportunity to purchase shares. This has been discussed endlessly over the past year, and we must be getting close to it.
- When is FSD going to be 100% unsupervised?
- Our Take – Musk said today that this is essentially a solved problem, and it could be available in the U.S. by the end of this year.
- What is the current bottleneck to increase Robotaxi deployment & personal use unsupervised FSD? The safety/performance of the most recent models or people to monitor robots, robotaxis, in-car, or remotely? Or something else?
- Our Take – The bottleneck seems to be based on data, which Musk said Tesla needs 10 billion miles of data to achieve unsupervised FSD. Once that happens, regulatory issues will be what hold things up from moving forward.
- Regarding Optimus, could you share the current number of units deployed in Tesla factories and actively performing production tasks? What specific roles or operations are they handling, and how has their integration impacted factory efficiency or output?
- Our Take – Optimus is going to have a larger role in factories moving forward, and later this year, they will have larger responsibilities.
- Can you please tie purchased FSD to our owner accounts vs. locked to the car? This will help us enjoy it in any Tesla we drive/buy and reward us for hanging in so long, some of us since 2017.
- Our Take – This is a good one and should get us some additional information on the FSD transfer plans and Subscription-only model that Tesla will adopt soon.
Tesla will have its Earnings Call on Wednesday, January 28.
Elon Musk shared an incredible detail about Tesla Cybercab’s potential efficiency, as the company has hinted in the past that it could be one of the most affordable vehicles to operate from a per-mile basis.
ARK Invest released a report recently that shed some light on the potential incremental cost per mile of various Robotaxis that will be available on the market in the coming years.
The Cybercab, which is detailed for the year 2030, has an exceptionally low cost of operation, which is something Tesla revealed when it unveiled the vehicle a year and a half ago at the “We, Robot” event in Los Angeles.
Musk said on numerous occasions that Tesla plans to hit the $0.20 cents per mile mark with the Cybercab, describing a “clear path” to achieving that figure and emphasizing it is the “full considered” cost, which would include energy, maintenance, cleaning, depreciation, and insurance.
Probably true
— Elon Musk (@elonmusk) January 22, 2026
ARK’s report showed that the Cybercab would be roughly half the cost of the Waymo 6th Gen Robotaxi in 2030, as that would come in at around $0.40 per mile all in. Cybercab, at scale, would be at $0.20.
Credit: ARK Invest
This would be a dramatic decrease in the cost of operation for Tesla, and the savings would then be passed on to customers who choose to utilize the ride-sharing service for their own transportation needs.
The U.S. average cost of new vehicle ownership is about $0.77 per mile, according to AAA. Meanwhile, Uber and Lyft rideshares often cost between $1 and $4 per mile, while Waymo can cost between $0.60 and $1 or more per mile, according to some estimates.
Tesla’s engineering has been the true driver of these cost efficiencies, and its focus on creating a vehicle that is as cost-effective to operate as possible is truly going to pay off as the vehicle begins to scale. Tesla wants to get the Cybercab to about 5.5-6 miles per kWh, which has been discussed with prototypes.
Additionally, fewer parts due to the umboxed manufacturing process, a lower initial cost, and eliminating the need to pay humans for their labor would also contribute to a cheaper operational cost overall. While aspirational, all of the ingredients for this to be a real goal are there.
It may take some time as Tesla needs to hammer the manufacturing processes, and Musk has said there will be growing pains early. This week, he said regarding the early production efforts:
“…initial production is always very slow and follows an S-curve. The speed of production ramp is inversely proportionate to how many new parts and steps there are. For Cybercab and Optimus, almost everything is new, so the early production rate will be agonizingly slow, but eventually end up being insanely fast.”
BREAKING: Tesla launches public Robotaxi rides in Austin with no Safety Monitor
Tesla Earnings Call: Top 5 questions investors are asking
