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Tesla Model 3 takes on World War II-era trailer in range efficiency towing test

Credit: YouTube | Teslanomics with Ben Sullins

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A video showing a Tesla Model 3 towing a 550-pound trailer recently provided a glimpse at how real world range is affected when the all-electric sedan pulls heavy items.

The real-world Model 3 towing test was conducted by Ben Sullins of the Teslanomics YouTube channel. Ben’s channel is known for reviews and lifestyle videos with electric vehicles, and this time he decided to clarify the many questions EV owners have about the real-world effect on range when towing with the Model 3.

Sullins’ Tesla Model 3 is officially rated with 325 miles of range, but his real-world average efficiency of about 78% usually meant that his vehicle is only able to travel about 253 miles per charge. It is essential to keep in mind that the range of an electric vehicle depends on several variables, including driving style, weather, climate control within the vehicle’s cabin, and weight inside the car. When more features of the vehicle are in use, the battery is going to be under more stress. More use of vehicle features will inevitably decrease the range.

The trailer used in the test is a converted World War II work truck or jeep that weighs 550 lbs. The trailer was stacked with an outdoor fold-out tent and its necessary rack for use that weighs an additional 200 extra pounds, making the total weight of the trailer about 750 lbs. Sullins’ total trip covered 26.7 miles of both inner-city streets and freeways both ways. This gives the test more validity as drivers likely use a combination of highways and city streets when towing a trailer.

Sullins noted that his total energy usage during the test was 12 kilowatt-hours (kWh), and his vehicle showed an average consumption of 448 Watt-hours per mile (Wh/mile). This energy output differs from his normal driving efficiency, as his car showed an average consumption of 320 Wh/mi when it traversed the same route without a trailer.

Credit: YouTube | Teslanomics with Ben Sullins

These figures suggest that the additional weight from the trailer resulted in a 40% loss in range, which translates to a 49% efficiency rate. With this in mind, Sullins noted that with the 750-lb WWII trailer, his Model 3 would have a total real-world range of 160 miles. This is ample for the casual weekend camping trip, but likely challenging for inter-state long-distance travel.

As the Teslanomics host emphasized, there are many variables involved when it comes to electric vehicles and their efficiency. The Tesla Model 3 in the video, for example, seemed to be equipped with Turbine Wheels, which are larger and not specifically designed for the Model 3. The average speed of the vehicle during the trip also played a factor in the Model 3’s efficiency while towing. As noted by commenters on Sullins’ video, electric car towing veterans from countries such as Norway usually travel at about 55 mph when they are pulling heavy loads to help maximize range.

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Credit: YouTube | Teslanomics with Ben Sullins

While this decrease in range is expected and inconvenient, there are plenty of precautions Tesla drivers can take to avoid the troubles that come with towing. Luckily, Superchargers are readily available, and Tesla has worked diligently to increase the presence of charging stations across the world.

If a trailer or other item that needs to be towed is attached to a Tesla, expect decreases in range and plan by stopping at Superchargers on the way. Tesla’s in-car trip planning software will get drivers to their destinations in the most efficient way possible, even if the vehicle is towing a heavy trailer.

Watch Ben Sullins’ video on the Model 3’s range when towing a 750-lb trailer below.

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

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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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