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The Boring Company’s innovations take center stage at Hawthorne test tunnel opening event

(Photo: Tom Cross/Teslarati)

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Two years ago, Elon Musk founded a tunneling startup aimed at battling what he creatively described as “soul-destroying traffic.” Musk’s idea was simple — traffic congestion can be addressed by using underground tunnels where vehicles can travel at extremely fast speeds on electric skates. Hence, a startup aptly named The Boring Company was born.

Since then, the tunneling company has acquired a high-profile project in Chicago, developed low-cost bricks from tunneling rocks, and completed its first test tunnel. Constructed on the backyard of the SpaceX headquarters, the Boring Company’s Hawthorne test tunnel was unveiled on Tuesday in an opening party, complete with entertainment, fun activities, and a medieval watchtower overlaid with Boring Bricks.

Being smaller in diameter than traditional tunnels, The Boring Company’s projects are more cost-effective and faster to construct. Its 1.14-mile Hawthorne tunnel, for example only cost ~$10 million to build, including internal infrastructure, lighting, comms/video, safety systems, ventilation, and tracks. Conventional tunneling projects, which involve larger tunnels and traditional digging methods, could cost as much as $1 billion per mile.

Elon Musk conducted an information session to members of the press prior to the official start of the unveiling. During the meeting, Musk discussed some updates about the startup’s concepts. For one, Musk noted that The Boring Company had changed its idea of using electric skates to propel cars. Instead of using pre-made electric skates, the company is now using the vehicle as the skate itself. 

“There won’t be a skate — no more skate. The vehicle is the skate,” Musk said.

Tesla Model X fitted with electric skates for transportation through The Boring Company’s Hawthorne test tunnel. (Photo: Tom Cross/Teslarati)

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The Hawthorne test tunnel would be utilizing the Loop System, which is designed to accommodate cars and passenger pods. During the Q&A, Musk noted that the Loop is a step towards the eventual creation of Hyperloop, which utilizes pods traveling inside low-pressure tubes at speeds of up to 700 mph. “The loop is a stepping stone toward Hyperloop. Loop is for transport within a city. And Hyperloop is transport between cities,” Musk said.

Apart from referencing Hyperloop transportation, Musk further discussed other possible uses for The Boring Company’s technology. Reiterating an idea he expressed during a “fireside chat” in Los Angeles with LA Mayor Eric Garcetti, Musk noted that the Boring Co.’s tunnels could also be used for utilities such as water lines. Due to the tunnels’ construction and design, Musk stated that “If a water main breaks, it floods through the tunnel one end, and gets pumped out the other.” This would allow cities to address utility issues without much hassle.

Just like Musk’s other companies like Tesla and SpaceX, The Boring Company is in a constant process of innovation. The startup, for one, continues to design and develop its third-generation Tunnel Boring Machine. Once operational, the new TBM would be capable of digging 15 times faster than a conventional boring machine. Apart from using a fully-electric system to increase power, The Boring Machine is also designing the upcoming TBM’s cutter head to process more dirt. In yet another step away from convention, the tunneling startup is also creating reinforcement segments on site using the dirt excavated from the tunnel itself.

Musk has noted that The Boring Company’s tunneling projects are already attracting a lot of interest, stating that “we have more demand on tunnels than we can satisfy,” and that “we have people hounding us to invest nonstop.” In a flourish of classic Elon Musk humor, the Tesla and SpaceX CEO noted that “it’s kinda ridiculous how much interest we’ve had in investing in Boring Company.” Elaborating further, Steve Davis, the CEO of the Boring Company, added that the startup receives “greater than 5 and less than 20 requests per week from different municipalities and stakeholders.”

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 has a Cybercab problem nobody saw coming

Tesla’s Cybercab line now builds robotaxis faster than Tesla can deploy them, Lars Moravy says.

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Tesla’s Cybercab line in Texas can now build the two seat robotaxi faster than the company can put it into service, according to Lars Moravy, Tesla’s Vice President of Vehicle Engineering. “We don’t run every day because the line can run so fast. It’s currently outpacing our deployments,” Moravy said in a new Cybercab deep dive from Munro Live. “So, it’s a bit of a race right now. Who’s going to go faster? Right now the manufacturing line’s ahead.”

Tesla’s official Robotaxi account shared a Cybercab analysis video on X on Monday, calling it a “Cybercab engineering deep dive.” Moravy’s comments go further than what he told analysts on the Q3 earnings call last week, when he said the Cybercab line’s listed capacity of more than 125,000 units a year undersells what it can actually run.

The tour shows where that speed comes from. Tesla’s unboxed process splits the Cybercab into front, rear, side and center modules that are built and tested on their own before they meet on a short final line. That final line has just 25 fully automated stations, which Tesla’s team estimated is a fifth to a tenth of what a Model Y needs. The full line is about 78% automated, the framing line is already at 100%, and the layout uses roughly 50% less floor space per vehicle. The stated goal is “100% automation in 10 second cycle time,” or one finished Cybercab every 10 seconds.

Tesla also deleted the paint shop. Only the side modules are coated, and the exterior panels get their color inside the molding machine. Engineers said the car is designed to run at least 500,000 miles, which matters for a vehicle that will spend most of its day carrying riders.

The battery got the same treatment. The Cybercab uses an 88S6P pack of 4680 cells in a steel enclosure, a first for Tesla, with each module potted separately so a single failed module can be swapped instead of the whole pack. Wireless battery management boards replace a wiring harness, and new contactors are fast enough to drop the pyro fuse entirely. Tesla’s battery director graded the pack an A minus, compared with a D for the Model Y structural pack and a B minus for Cybertruck. Up front, the drive unit runs an 11:1 gear ratio versus roughly 9:1 on most Teslas, since the Cybercab does not need a high top speed.

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The deployment side is now the bottleneck Moravy described. Tesla had more than 50 Cybercabs working the Formula 1 weekend in Austin, and Texas records show 463 Cybercabs registered. Tesla said on its earnings call that Cybercab service will launch in Dallas next month, and Moravy said the company is aiming to get Cybercabs to customers by the end of 2026. Every unit built so far has gone into Tesla’s own fleet since the line moved into volume production in April.

Munro Live also asked when it could get a Cybercab to tear down. Tesla’s answer: “Not yet.”

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How SpaceX Is raising Raptor’s sea-level thrust while holding engine mass steady

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Credit: SpaceX

SpaceX’s Raptor engine family has steadily increased sea-level thrust while simultaneously reducing mass, turning iterative engineering gains into substantially higher performance for the Super Heavy booster. CEO Elon Musk shed more light on how powerful Raptor 4 will be, and it’s pretty crazy.

Raptor 1 delivered 185 metric tons of thrust at roughly 2,080 kilograms, while Raptor 2 raised that to 230 tons while cutting mass to about 1,630 kilograms. SpaceX data for Raptor 3 lists a target of 280 tons at 1,525 kilograms (with further reductions in associated vehicle hardware), while operational flight ratings have been cited near 250 tons.

This morning, Elon Musk stated that Raptor 4 is expected to reach 300 tons of sea-level thrust at roughly the same mass as Raptor 3. Across these versions, thrust has risen by more than 60 percent from the first engines while engine mass has fallen, producing a sharp improvement in thrust-to-weight ratio. This is a true testament to how great SpaceX engineering has been:

With 33 engines on SuperHeavy, the jump from earlier versions to a 300-ton Raptor 4 would produce roughly 9,900 metric tons of total liftoff thrust, nearly three times the Saturn V’s approximately 3,400 metric tons from its five F-1 engines.

This is not just a larger number on a data sheet, either, as sea-level thrust is the force available the moment the vehicle leaves the pad. This is when it is heaviest and still deep in Earth’s gravity well and dense atmosphere.

Higher levels of sea-level thrust directly improves the initial thrust-to-weight ratio of the full stack. A higher ratio produces faster acceleration off the pad, which shortens the time the rocket has to spend fighting gravity, and gravity losses during the first minute or two of the flight are a major drain on total available delta-v. Every second shaved off of that early climb preserves more propellant energy for reaching orbital velocity or for carrying extra payload.

Because Super Heavy’s engine count is constrained by vehicle diameter and packing density, increasing thrust per engine is the most straightforward way to raise total liftoff performance without redesigning the booster structure or design.

The same-mass target for Raptor 4 is equally important. Holding engine mass roughly constant while raising thrust improves the engine’s own thrust-to-weight ratio and reduces the structural and propellant mass fraction that must be carried solely to support the engines.

Earlier Raptor iterations also simplified or eliminated extensive vehicle-side hardware such as heat shields. These gains compound: more force for less installed mass leaves additional capacity for propellant, payload, or operational margins such as engine-out capability.

For Starship’s architecture, the practical effects are large. Greater liftoff thrust supports heavier vehicles, larger propellant loads, and higher payloads to low Earth orbit, figures SpaceX has targeted in the 100-plus-ton reusable range. That capacity underpins orbital refueling, lunar missions, and eventual Mars cargo and crew flights.

Continued growth in sea-level thrust therefore tightens the gap between theoretical rocket performance and the high flight rates and reusability needed to make large-scale space transport practical.

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Tesla Assisted Driving expands to tenth EU country

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Tesla has expanded its Tesla Assisted Driving (TAD) suite to its tenth European country, as Latvia joined a growing list of European Union member states authorizing the company’s advanced driver assistance technology.

Tesla Europe announced this morning that the system is now approved in Latvia, with a software rollout to begin soon.

The approval and rollout follow recognition of a provisional European type approval originally granted by the Netherlands’ RDW authority on April 10.

Latvia’s Road Traffic Safety Directorate (CSDD) evaluated the Dutch documentation, coordinated with the other national authorities, and reviewed updates from Tesla. These included tightened limits on speed offsets, automatic resets of any manual speed adjustments after each trip, and stronger driver monitoring.

In Europe, the feature is marketed as Tesla Assisted Driving after a recent rule change that labeled the name “Full Self-Driving” as misleading.

Tesla starts showing how FSD will change lives in Europe

The system remains an SAE Level 2 driver assistance tool, not unsupervised autonomy. It can control speed, steering, braking, lane changes, and intersections while following a navigation route. Drivers need not keep their hands on the wheel at all times, yet they must continuously monitor the road and be prepared to intervene immediately.

The sequence of EU recognitions began with the Netherlands in April and continued through Lithuania, Estonia, Denmark, Belgium, Slovenia, Czechia, Croatia, and Slovakia. Most have relied on mutual recognition of the single Dutch provisional approval rather than independent national testing.

These national clearances do not yet constitute bloc-wide authorization. An EU-wide decision requires a qualified majority in the Technical Committee on Motor Vehicles: at least 15 of 27 member states representing 65 percent of the EU population. Larger markets, like Germany, France, and Italy, remain under review, and a vote is expected this December.

However, for Latvian Tesla owners with compatible vehicles and software, the imminent rollout expands access to the supervised system while underscoring that attentive human oversight remains essential.

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