Lifestyle
Tesla power limiting may also occur on extreme G-forces
New racetrack discovery indicates Tesla power limiting may go beyond just temperature sensing.
We recently set out to conquer (once more) the Streets of Willow Springs racetrack, a technical, 1.6 miles long, with 13 turns, located approximately an hour north of Los Angeles. Being a short track with a lot of turns (most tracks are 2 to 3 miles long), it’s considered a relatively low speed track. There’s opportunity to briefly reach 100+ mph on straightaways, but most of the time is spent within the 40mph to 80mph range.
Streets of Willow Springs is an excellent track for practicing turns at lower speeds. Unlike our race at Laguna Seca which proved to be one of the more difficult and dangerous tracks we’ve driven, this track had no retaining walls, smooth shoulders and overall a much less dangerous track to race on.
Tesla Model S Configuration
Tesla’s infamous power limiting feature to prevent overheating was not nearly as pronounced this time around because of the short bursty nature of the track. We could easily achieve a full five timed-laps without the dotted power limit line dropping below 160kw mark.
We used a set of new Toyo R888 racing tires (19″, 265 width) this time around as opposed to our usual BFGs. The Toyo’s held up exceptionally well in terms of wear and durability while also providing great traction. It was a cold day (temperature in the 50s) so we kept tire pressure higher than usual, aiming for 36 psi hot.
The Model S experienced a bit of steering wheel lockup through turn 1 (known issue), but it was very short lived.
New Tesla Power Limiting Feature?
A new phenomenon was discovered on the Model S where the vehicle appears to cut power when experiencing high lateral G-forces along, and when the car is angled from flat level ground.
Case in point is the track’s #8 bowl turn which sports a 20 degree bank. This is where we experienced losing power for a brief second or two as we into the bank pushing nearly 1.2 Gs. The behavior can be seen in the video (2:20 min mark) where we were unable to accelerate past 40mph. We speculate that the combination of G-forces and angle from level ground (measured by the vehicle’s internal gyro) might be simulating an accident scenario, hence Tesla’s onboard system disables any additional use of power.
Performance
Best lap time was 1:31, which was a nice improvement over last year’s 1:39. Our Teslarati 48 ran within the Green (Advanced) group with Speed Ventures. The fastest time in the class came in at 1:26 (Formula Mazda) while the slowest was 1:36. We felt that there was still a lot of room for improvement and with a little more practice, we should easily break below 1:30 next time. If not for the power limiting features of the Model S our lap times could be at minimum five seconds faster.
The max lateral G came in at 1.2 G which is on par with what we experienced in the past (using G-Force Rival tires).
Charging and Power Consumption
Power consumption came in at 1.2 kw / mile which translates to approximately 4 rated miles used per 1 actual mile of distance travelled.
There is a set of RV stalls within a 5 minute walk from the Streets. Unfortunately, there was only one stall with a 50 amp outlet which happened to be taken. We ended up pitting one mile away by the garage at Big Willow which had a couple of 240v 50amp outlets.
Travel
There are several possibilities of getting to and from the track.
ALSO SEE: Interactive Tesla Supercharger Map
- Hawthorne Supercharger has been the charger of choice for us thus far. It’s 95 miles away, but because of significant elevation changes, coming to Willow Springs will consume over 110 miles of range, even when driving super conservatively. Coming back it will take only 90 rated miles.
- Oxnard Supercharger just opened which is a little closer to the track at 87 miles away. Coming back will require only 66 rated miles making it a very attractive option.
- Barstow Supercharger is 103 miles away from the track (EV Trip Planner estimated 105). The shortest route seems to be through Victorville, however it used 120 miles of range even while driving very conservatively likely due to the strong winds and elevation changes.
- The Rancho Cucamonga Supercharger that’s currently under construction, appears to be a good option at 93 miles away.
From the North or West
And traveling from the North or West, Tejon Ranch Supercharger is the best option. 60 miles away, requiring 73 rated miles to get there but only 55 back.
Elon Musk
Elon Musk drops a surprise update on Boring Company’s next big dig
Musk says Boring Company could shrink the Austin to San Antonio drive to just minutes.
Elon Musk says The Boring Company is working on what he called “a simple, precursor Hyperloop” tunnel connecting Austin and San Antonio, targeting speeds above 200 mph and cutting a drive that can take up to two and a half hours down to a consistent under 30 minutes. Musk posted the idea on X Sunday, in a reply to a repost of an AI generated video imagining a science fiction future with human colonies on other worlds, which he shared with the line “This is the future we shall bring into being.”
This is the future we shall bring into being pic.twitter.com/8aD0w8MDVc
— Elon Musk (@elonmusk) September 20, 2026
The Boring Company’s own account picked up the idea in the same thread, adding a detail about how the trip would actually work: “Because Loop/Hyperloop is express (i.e. no intermediate stops), one could travel from an Austin parking lot to a favorite San Antonio restaurant in about 30 minutes. As long as they both have Loop stations.” That framing ties the proposed intercity link to the same station model the company already runs in Las Vegas, where riders enter the tunnel network through small, garage style stops rather than one central terminal.
This is not the company’s first run at the Austin to San Antonio corridor. Boring Company floated tunnels between the two cities as far back as 2021, and later competed for a separate San Antonio Loop project tied to the airport before that specific bid stalled. Pitches for tunnels in Chicago, Los Angeles, and a New York to Washington corridor have followed a similar pattern of big announcement without a shovel in the ground.
What is different this time is the balance sheet, especially since The Boring Company closed a 3 billion dollar funding round led by investors in the United Arab Emirates earlier this month at a valuation near 23 billion dollars, giving the tunneling company more capital to chase speculative projects than it had during its earlier Texas pitches. The company is also mid-build on two other intercity systems it has actually broken ground on, inc;luding a Nashville tunnel linking downtown to the airport, where a second boring machine finished commissioning in June, and its Las Vegas network, where the station count keeps climbing on paper faster than tunnels get dug.
That gap between announcement and execution is the reason to treat Sunday’s post as an opening bid rather than a project. A tunnel spanning roughly 80 miles between two metro areas, running at speeds Boring Company has not demonstrated over any real distance, would dwarf anything the company has built. For now, the Austin to San Antonio Hyperloop exists as a caption under an AI generated space video.
Elon Musk
Tesla eyes supply partners for Optimus mass production
Tesla certified three Chinese suppliers for Optimus mass production, signaling its robot timeline is accelerating.
Tesla’s robotics team traveled to Ningbo, in China’s Zhejiang province, on September 16 and spent the following day auditing component suppliers for Optimus, according to a Bloomberg report cited by RobotAIGeek. The visit moved three manufacturers from provisional status to certified mass production partners: Tuopu Group, which handles actuators and chassis components, Ningbo Joyson Electronic, a sensor supplier, and Zhejiang Sanhua Intelligent Controls, which builds thermal management systems. All three already supply parts to Tesla’s electric vehicles, and the audit reportedly came with fresh orders that supply chain reports put at an initial batch of roughly 5,000 units.
Tuopu, Joyson, and Sanhua built their manufacturing base serving the automotive industry, where tolerances and volume requirements are already close to what a mass produced humanoid robot demands. Sanhua in particular has history here. Teslarati reported last October that the company had received a roughly $685 million order for linear actuators tied to Optimus, a volume industry watchers estimated could cover around 180,000 robots once production ramped.
Supply chain reports tied to this week’s audit put Tesla’s near term production goal at about 1,000 Optimus units a week by late September, rising to 2,000 to 2,500 units a week by the end of the year. That pace would put real weight behind the timeline Tesla has been building toward since May, when it wound down Model S and Model X production at Fremont to convert that floor space into a dedicated Optimus line targeting one million units annually. JPMorgan analysts who toured the factory in August confirmed the conversion took roughly four months, a pace Musk has called unprecedented for a facility that size.
New drone video shows Tesla’s Optimus Factory reaching a turning point
Fremont is only the first phase. A second, larger Optimus plant is rising at Gigafactory Texas, where drone footage shared by Joe Tegtmeyer last week showed the structural steel nearing completion on the north end of the building. Tesla has said that facility is meant to eventually support production of up to 10 million units a year, though volume output there is not expected before 2027.
Commercial sales of Optimus are still targeted for the second half of 2027, but production is expected to start well before then. JPMorgan analyst Rajat Gupta has said Tesla’s “Optimus Academy” program, which uses early units to collect real world training data inside Tesla’s own facilities, is expected to be running later this year. Bloomberg Intelligence analyst Ian Ma described the Ningbo audits as “a positive commercialization signal for China’s humanoid supply chain,” noting that sentiment could improve further if the visit leads to confirmed supplier nominations and larger orders. The Solactive China Humanoid Robotics Index rose about 1.4% on the news, though it remains down roughly 30% for the year.
Elon Musk
Tesla primes Cybercabs for 4K streaming and high bandwidth gaming with Starlink integration
Tesla is now shipping Cybercabs from Giga Texas with Starlink hardware built in as standard.
Tesla’s Cybercabs are now leaving Gigafactory Texas with Starlink hardware on the rear hatch in significant numbers, according to drone footage captured Tuesday by longtime Austin drone observer Joe Tegtmeyer. Production at the factory ramped back up after the Labor Day weekend, and his flyover of the outbound lot showed rows of gold Cybercabs alongside Model Y Long Wheelbase units, many carrying the satellite module for the first time as standard equipment rather than a one off retrofit.
Giga Texas today is busy with production coming back up following the long weekend. Of interest today in the outbound lot is the appearance of hundreds of Mode; YL’s and many more Cybercabs and for the 1st time equipped with the Starlink module one the hatch in big numbers.
At… pic.twitter.com/G9yl6s51m4
— Joe Tegtmeyer 🚀 🤠🛸😎 (@JoeTegtmeyer) September 8, 2026
Tesla first showed Starlink built into an actual Cybercab on August 10, when the Robotaxi account posted images of a single gold unit with the antenna integrated into the roofline above the taillights and called it the first Cybercab with Starlink integration. That followed a July reveal where Tesla and Starlink jointly posted a cutaway diagram of the antenna placement without a working vehicle to back it up. Ashok Elluswamy, Tesla’s VP of AI software, said at the time that the connection isn’t required for the car to drive itself. It exists mainly for navigation, customer service and keeping tabs on the fleet.
Musk has made a different case in public. During Tesla’s Q2 earnings call, he said the company can’t afford robotaxis stranded in what he called “Bermuda Triangles of lack of cellular connectivity,” and he separately claimed on X that Starlink will eventually reach every Tesla built, calling it the only way to deliver high bandwidth to billions of vehicles. He has also pitched the antenna as an entertainment upgrade, telling riders they would be able to stream 4K video or play games during a trip.
The rollout has moved fast since. Robotaxi service opened to the public in Austin on September 3, and Cybercabs had already been spotted with Starlink hardware in Houston and near Miami International Airport in the weeks before Tuesday’s factory footage showed the module shipping at volume rather than on scattered test units. Whether the satellite link earns its keep is still an open question. Tesla’s unsupervised service currently runs in dense metro geofences in Texas and Florida, markets where cellular coverage is already strong, which is not where the rural dead zones Musk describes tend to show up.










