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Tesla Model S Pulls 1.2 G-Force on the Most Challenging Track Yet

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Even with 7 different tracks under our belt, Sonoma Raceway pushed the 48 Tesla Model S to the extreme limits.

This turned out to be the most challenging track we’ve ever raced on. Hardly anything comes close in terms of danger and complexity. Not only is the layout of the course challenging in itself, having walls everywhere added an even greater degree of difficulty. We were happy to have survived the track by not hitting any walls despite having loss control on several occasions.

The Track

Sonoma, formerly Infineon Raceway, is in Northern California, just half an hour north east of San Francisco. It’s a 2.5 mile very technical road course with 12 turns and 160 feet of elevation changes. The track has retaining walls very close to the track so any loss of control can have very serious consequences.

Maps-nfineon SV_SON_

The Tesla Model S

Following correct race lines was of outmost importance on this track and deviating from it could mean sub-optimal times or even loss of control.

Track

  • Turn 1: We experienced something alarming right in the middle of turn 1 where the track goes uphill. Our steering wheel locked-up after 1 G of lateral pressure was applied to the front wheels on-camber into the turn.
  • Turn 2: More off-camber than it appears, and we ended up sliding there a couple of times. Following the correct racing line and applying acceleration on track out prevented that from happening.
  • Turn 3a: Exhilarating! Takes place right over a hill so you can’t really see where you’ll end up on track out. It was fun to be able to follow our instincts and exit within inches off the edge of the track.
  • Turn 6 “the carousel”: Pushed our Model S to the upper suspension limits as we pulled a 1.1 to 1.2 lateral G force through the turn without loss of control.
  • Turns 8 and 8a: Extremely tricky. The turn appears like a regular S but the slight elevation and camber changes make it a challenge. On exit of 8a, we had to apply a lot of acceleration because without it the Model S will slide sideways until traction control catches it.
  • Turn 10: Not technically challenging but a true test of courage since it’s very close to the wall.

Out best lap time was 2:06 in session 3, lap 1. Top speed we reached on the track was 105 mph. Power limitation degraded lap times by approx. 6 seconds per lap.

 

Charging and Power Consumption

Green Turn 10 ZB__0186-May3114The track has a single 220V/50A outlet at the end of the garage next to the Sunoco fuel station. It had a male twist-on adapter, but unfortunately all we had was a SS2-50P male adapter that we weren’t able to use with the outlet. No RV hookups onsite. We ended up running for two sessions in the morning, going to Vacaville supercharger that’s 37 miles away, and getting back with enough time to complete 2 afternoon sessions. Inn Marin hotel in Novato 10 miles away has a J1772 ChargePoint network charger that we used overnight.

Power consumption was similar to other tracks. The 48 Tesla Model S consumed approximately 4 miles of range per 1 actual mile of distance. A 7 lap session (5 timed laps, 1 warm-up, and 1 cool-down lap) consumed 80 miles of range.

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Power limitation due to overheating came up on the first lap despite chilly 55 degree temperature in the morning. Power limitation remained at 160 kWh/mile for most of the day.

Travel

Travel from San Diego to Sonoma took 11 hours, including four 45-minute charging stops in San Juan Capistrano, Tejon Ranch, Harris Ranch, and Gilroy.

ALSO SEE: Interactive Tesla Supercharger Map

Contrary to last year when we were hoping to run into other Tesla owners at a Supercharger, nowadays every supercharger was full when we arrived. Even the newer Supercharger facilities were 7+ stalls were occupied. It makes us wonder what the charging experience will be like as Tesla Motors continues to scale out production of the Model S and upcoming Model X.

Vacaville Supercharger Tejon Ranch Supercharger
Vacaville Supercharger Tejon Ranch Supercharger

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Green Turn 10 speed shots ZB__0586-May3114 Green Turn 3 ZB__2322-May3114 z_Pits-Etc PIT_3123-May3114 z_Pits-Etc PIT_3125-May3114

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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.

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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.”


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.

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Tesla eyes supply partners for Optimus mass production

Tesla certified three Chinese suppliers for Optimus mass production, signaling its robot timeline is accelerating.

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Concept rendering of Tesla Optimus in mass production

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.

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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.

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tesla cybercab with no manual controls showing a movie with two employees inside

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.

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.

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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.

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