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Answering Elon Musk’s call for help to build Thailand’s cave rescue pod in 24 hours

[Credit: Giovanna Castro Salas/Wing Inflatables via Mad River Union]

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On the morning of Friday, July 6, Andrew Branagh received a call that would put his company’s 30-year experience in the field to the test. Branagh, who serves as the CEO of Arcata-based Wing Inflatables, had been asked by Elon Musk’s engineering team from SpaceX to construct an inflatable escape pod for the 12 children and their coach who are currently stranded in an air pocket inside the sprawling Tham Luang Nang Non cave complex in Thailand. Knowing that time is of the essence, Branagh and his team got to work.

The stranded members of the Wild Boar Soccer Team have been stranded in the caves since June 23, after a casual excursion into the underground caverns turned into a pitch-black ordeal due to flash floods. The group of 13, comprised of boys aged 11-16 and their 25-year-old coach, were missing until this past Monday, when they were located by two UK divers. The children and their coach have been given food and survival supplies, and on Tuesday, a doctor and a nurse spent the night with them. While the group is safe for now, however, retrieving them is not easy, considering that they are located 2.5 miles away from the entrance to the caves. Parts of the cave systems are also underwater, which would force the children to dive into murky waters during their retrieval.

Wing Inflatables’ rescue pods under construction. [Credit: Giovanna Castro Salas/Wing Inflatables via Mad River Union]

In a tweet on Friday, Elon Musk posted a brief update on Twitter stating that SpaceX and Boring Co. engineers are headed to Thailand in order to see if they can be helpful to the government’s rescue efforts. That was the same day that Branagh woke up to a text and call from the SpaceX team. Branagh notes that the message was brief, but the request was clear.

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“Elon has an idea, or our team does.”

Musk’s initial idea to rescue the trapped children is to use an inflatable tube. Considering Wing’s experience in the field, Branagh and his team went to work refining the idea. The result was a submersible “torpedo,” which could hold a person with an air tank and a breathing apparatus. The torpedo is designed to be towed by its front and back, and be sleek enough to be guided through the cave system’s trickiest sections. Branagh opted to utilize 30% of his company’s workforce for the fast-track effort, reducing his business’ usual output by half. The CEO’s gambit worked, and by 9:30 a.m. on Friday, a prototype was ready. Branagh noted that the first rescue pod, which is 7-feet-long, sealed with velcro, and inflatable with the passenger’s exhaled air, was a finished product. There were no throw-away units or re-dos. There was just not enough time.

By 1:00 p.m., Wing’s rescue pod was tested on the Arcata Community Pool, with a certified dive instructor and two individuals who do not know how to swim. The tests were encouraging, with both test individuals being able to breathe comfortably inside the rescue pod. Branagh had also been speaking with Musk and his engineering staff in a conference call.

“He (Elon) was very direct and clear on supporting getting a solution in place,” Branagh said.

By 5:15 p.m., the first set of Wing Inflatables rescue pods were ready to be transported from Arcata-Eureka airport in Northern CA.

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Apart from the inflatable pods that the engineers from SpaceX and The Boring Company transported to Thailand on Friday, Musk and his team at LA are also designing a mini-submarine for the children. In a series of tweets over the weekend, Musk stated that the mini-sub would be small enough to fit through the contours of the cave and its hull will be made of the same material as the oxygen transfer tube of a Falcon rocket, making it extremely durable. The mini-sub would have four handles and hitch points for the front and rear, with two air tanks on both front and rear, allowing up to four tanks to be connected.

Rescue efforts for the stranded children are already underway as of Sunday. For this rescue attempt, the children would have to dive using scuba gear into the waters with two experienced divers. Divers who will be conducting the retrieval of the soccer team are expected to spend 11 hours inside the caves, six hours heading to the children, and five hours going out. It remains unknown for now if the rescuers will be utilizing the rescue pods delivered by the SpaceX and Boring Co. team. Musk’s mini-sub continues testing in LA, just in case it’s needed for the cave rescue efforts.

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla already has a complete Robotaxi model, and it doesn’t depend on passenger count

That scenario was discussed during the company’s Q4 and FY 2025 earnings call, when executives explained why the majority of Robotaxi rides will only involve one or two people.

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Credit: @AdanGuajardo/X

Tesla already has the pieces in place for a full Robotaxi service that works regardless of passenger count, even if the backbone of the program is a small autonomous two-seater. 

That scenario was discussed during the company’s Q4 and FY 2025 earnings call, when executives explained why the majority of Robotaxi rides will only involve one or two people.

Two-seat Cybercabs make perfect sense

During the Q&A portion of the call, Tesla Vice President of Vehicle Engineering Lars Moravy pointed out that more than 90% of vehicle miles traveled today involve two or fewer passengers. This, the executive noted, directly informed the design of the Cybercab. 

“Autonomy and Cybercab are going to change the global market size and mix quite significantly. I think that’s quite obvious. General transportation is going to be better served by autonomy as it will be safer and cheaper. Over 90% of vehicle miles traveled are with two or fewer passengers now. This is why we designed Cybercab that way,” Moravy said. 

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Elon Musk expanded on the point, emphasizing that there is no fallback for Tesla’s bet on the Cybercab’s autonomous design. He reiterated that the autonomous two seater’s production is expected to start in April and noted that, over time, Tesla expects to produce far more Cybercabs than all of its other vehicles combined.

“Just to add to what Lars said there. The point that Lars made, which is that 90% of miles driven are with one or two passengers or one or two occupants, essentially, is a very important one… So this is clearly, there’s no fallback mechanism here. It’s like this car either drives itself or it does not drive… We would expect over time to make far more CyberCabs than all of our other vehicles combined. Given that 90% of distance driven or distance being distance traveled exactly, no longer driving, is one or two people,” Musk said. 

Tesla’s robotaxi lineup is already here

The more interesting takeaway from the Q4 and FY 2025 earnings call is the fact that Tesla does not need the Cybercab to serve every possible passenger scenario, simply because the company already has a functional Robotaxi model that scales by vehicle type.

The Cybercab will handle the bulk of the Robotaxi network’s trips, but for groups that need three or four seats, the Model Y fills that role. For higher-end or larger-family use cases, the extended-wheelbase Model Y L could cover five or six occupants, provided that Elon Musk greenlights the vehicle for North America. And for even larger groups or commercial transport, Tesla has already unveiled the Robovan, which could seat over ten people.

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Rather than forcing one vehicle to satisfy every use case, Tesla’s approach mirrors how transportation works today. Different vehicles will be used for different needs, while unifying everything under a single autonomous software and fleet platform.

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Tesla Cybercab spotted with interesting charging solution, stimulating discussion

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

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Credit: What's Inside | X

Tesla Cybercab units are being tested publicly on roads throughout various areas of the United States, and a recent sighting of the vehicle’s charging port has certainly stimulated some discussions throughout the community.

The Cybercab is geared toward being a fully-autonomous vehicle, void of a steering wheel or pedals, only operating with the use of the Full Self-Driving suite. Everything from the driving itself to the charging to the cleaning is intended to be operated autonomously.

But a recent sighting of the vehicle has incited some speculation as to whether the vehicle might have some manual features, which would make sense, but let’s take a look:

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

Now, it is important to remember these are prototype vehicles, and not the final product. Additionally, Tesla has said it plans to introduce wireless induction charging in the future, but it is not currently available, so these units need to have some ability to charge.

However, there are some arguments for a charging system like this, especially as the operation of the Cybercab begins after production starts, which is scheduled for April.

Wireless for Operation, Wired for Downtime

It seems ideal to use induction charging when the Cybercab is in operation. As it is for most Tesla owners taking roadtrips, Supercharging stops are only a few minutes long for the most part.

The Cybercab would benefit from more frequent Supercharging stops in between rides while it is operating a ride-sharing program.

Tesla wireless charging patent revealed ahead of Robotaxi unveiling event

However, when the vehicle rolls back to its hub for cleaning and maintenance, standard charging, where it is plugged into a charger of some kind, seems more ideal.

In the 45-minutes that the car is being cleaned and is having maintenance, it could be fully charged and ready for another full shift of rides, grabbing a few miles of range with induction charging when it’s out and about.

Induction Charging Challenges

Induction charging is still something that presents many challenges for companies that use it for anything, including things as trivial as charging cell phones.

While it is convenient, a lot of the charge is lost during heat transfer, which is something that is common with wireless charging solutions. Even in Teslas, the wireless charging mat present in its vehicles has been a common complaint among owners, so much so that the company recently included a feature to turn them off.

Production Timing and Potential Challenges

With Tesla planning to begin Cybercab production in April, the real challenge with the induction charging is whether the company can develop an effective wireless apparatus in that short time frame.

It has been in development for several years, but solving the issue with heat and energy loss is something that is not an easy task.

In the short-term, Tesla could utilize this port for normal Supercharging operation on the Cybercab. Eventually, it could be phased out as induction charging proves to be a more effective and convenient option.

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Tesla confirms that it finally solved its 4680 battery’s dry cathode process

The suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

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tesla 4680
Image used with permission for Teslarati. (Credit: Tom Cross)

Tesla has confirmed that it is now producing both the anode and cathode of its 4680 battery cells using a dry-electrode process, marking a key breakthrough in a technology the company has been working to industrialize for years. 

The update, disclosed in Tesla’s Q4 and FY 2025 update letter, suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

Dry cathode 4680 cells

In its Q4 and FY 2025 update letter, Tesla stated that it is now producing 4680 cells whose anode and cathode were produced during the dry electrode process. The confirmation addresses long-standing questions around whether Tesla could bring its dry cathode process into sustained production.

The disclosure was highlighted on X by Bonne Eggleston, Tesla’s Vice President of 4680 batteries, who wrote that “both electrodes use our dry process.”

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Tesla first introduced the dry-electrode concept during its Battery Day presentation in 2020, pitching it as a way to simplify production, reduce factory footprint, lower costs, and improve energy density. While Tesla has been producing 4680 cells for some time, the company had previously relied on more conventional approaches for parts of the process, leading to questions about whether a full dry-electrode process could even be achieved.

4680 packs for Model Y

Tesla also revealed in its Q4 and FY 2025 Update Letter that it has begun producing battery packs for certain Model Y vehicles using its in-house 4680 cells. As per Tesla: 

“We have begun to produce battery packs for certain Model Ys with our 4680 cells, unlocking an additional vector of supply to help navigate increasingly complex supply chain challenges caused by trade barriers and tariff risks.”

The timing is notable. With Tesla preparing to wind down Model S and Model X production, the Model Y and Model 3 are expected to account for an even larger share of the company’s vehicle output. Ensuring that the Model Y can be equipped with domestically produced 4680 battery packs gives Tesla greater flexibility to maintain production volumes in the United States, even as global battery supply chains face increasing complexity.

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