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Tesla’s Gigafactory formula rose from a humble “tent” at the Fremont Factory
Back in 2018, Tesla was in a very different place. The company was struggling to release the Model 3, and it was behind on Elon Musk’s aggressive self-imposed vehicle production targets. The Fremont Factory’s assembly lines were not producing enough Model 3s, and it seemed like the company was poised to fail. Critics and shorts circled Tesla like sharks smelling blood in the water. But something unexpected happened, and things were never the same after.
Throwing convention out the window, Tesla built another Model 3 line inside a massive sprung structure at the Fremont Factory grounds, which CEO Elon Musk fondly called a “tent” online. The structure, dubbed as GA4, was mocked to the highest degree, used as a joke by critics, and dismissed outright by skeptics. However, what was almost unknown at the time was that Tesla might have actually stumbled into something special with its sprung structure-based line. By building a simple, straight, Model 3 line inside a “tent,” Tesla seems to have effectively created a solid Gigafactory formula.
No standard automotive solution could be built in time, so we created a new solution. It is working & has slightly higher quality than the more traditional general assembly line. Perhaps most surprising is that the total cost of production in the Sprung tent is lower.
— Elon Musk (@elonmusk) June 27, 2018
A Practical Concept
The sprung structure-based Model 3 line was the brainchild of Automotive President Jerome Guillen, widely known as Elon Musk’s “problem solver” back in the Model S’ early days. The “tent”-based line followed a relatively simple system, with vehicles being assembled progressively the further they moved into the tent. Even GA4’s loading bays were placed on the sides of the structure, allowing Tesla to take deliveries into the line efficiently. Musk was enthusiastic about the sprung structure on Twitter, noting not long after the “tent” was built that the vehicles produced in the site had “slightly higher quality” than cars made elsewhere.
These humble but creative beginnings appear to have become the heart of Tesla’s Gigafactory formula, one used in Giga Shanghai and Giga Berlin, and seemingly improved further with Gigafactory Texas. This could be seen in the design and processes that Tesla has adopted so far in its Shanghai and Berlin plants, both of which invoke the image of a scaled-up, refined, and optimized version of Fremont’s “tent.”
A Gigafactory Formula
Tesla critics typically overlook the fact that the Fremont Factory is a legacy car plant at its core. It’s an expansive facility, and it is impressive in its own right, but it’s not a site developed specifically to produce all-electric cars. Thus, for the Model S, Model X, and the Model 3’s early days, Tesla was essentially developing a system that makes EVs at scale using a facility designed initially to manufacture cars equipped with the internal combustion engine.
Of course, Tesla has made numerous adjustments to make the Fremont Factory into one of the most advanced electric vehicle plants in the market. However, it is difficult not to be impressed with Tesla’s quick production ramp and flexibility in Gigafactory Shanghai, arguably the first EV factory that the company built using its GA4 formula, with its simple production lines to its numerous loading bays at its side. This concept seems to have been carried over to Gigafactory Berlin, which is expected to ramp its operations at a rate that rivals even that of Giga Shanghai.
A Matter of Scale
Ultimately, it appears that GA4 was Tesla’s “eureka” moment of sorts, at least for its electric vehicle factories. By scaling up and refining the sprung structure-based concept, Tesla was able to create monster factories like Giga Shanghai, and later this year, Gigafactory Berlin as well. However, this is not all as Tesla seems to be adopting an updated design for Gigafactory Texas, with its three main buildings built parallel with each other. Little is known about the reasons behind Giga Texas’ design, but there’s little doubt that the expansive facility will be very impressive when completed nonetheless.
Prior to the Model 3’s “production hell,” Elon Musk spoke about Tesla’s “Alien Dreadnought” factories, which are supposed to be so automated and advanced that they would resemble alien facilities featured in sci-fi fiction. Tesla seems to have shelved this idea following the Model 3’s challenges in its initial production ramp. With an established Gigafactory formula of sorts in its repertoire, however, and coupled with innovations such as the Model Y’s megacasts, Elon Musk’s dreadnoughts may not be too far into the future at all.
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Tesla has officially launched public Robotaxi rides in Austin, Texas, without a Safety Monitor in the vehicle, marking the first time the company has removed anyone from the vehicle other than the rider.
The Safety Monitor has been present in Tesla Robotaxis in Austin since its launch last June, maintaining safety for passengers and other vehicles, and was placed in the passenger’s seat.
Tesla planned to remove the Safety Monitor at the end of 2025, but it was not quite ready to do so. Now, in January, riders are officially reporting that they are able to hail a ride from a Model Y Robotaxi without anyone in the vehicle:
I am in a robotaxi without safety monitor pic.twitter.com/fzHu385oIb
— TSLA99T (@Tsla99T) January 22, 2026
Tesla started testing this internally late last year and had several employees show that they were riding in the vehicle without anyone else there to intervene in case of an emergency.
Tesla has now expanded that program to the public, but it is currently unclear if that is the case across its entire fleet of vehicles in Austin at this point.
Tesla Robotaxi goes driverless as Musk confirms Safety Monitor removal testing
The Robotaxi program also operates in the California Bay Area, where the fleet is much larger, but Safety Monitors are placed in the driver’s seat and utilize Full Self-Driving, so it is essentially the same as an Uber driver using a Tesla with FSD.
In Austin, the removal of Safety Monitors marks a substantial achievement for Tesla moving forward. Now that it has enough confidence to remove Safety Monitors from Robotaxis altogether, there are nearly unlimited options for the company in terms of expansion.
While it is hoping to launch the ride-hailing service in more cities across the U.S. this year, this is a much larger development than expansion, at least for now, as it is the first time it is performing driverless rides in Robotaxi anywhere in the world for the public to enjoy.
Tesla has scheduled its Earnings Call for Q4 and Full Year 2025 for next Wednesday, January 28, at 5:30 p.m. EST, and investors are already preparing to get some answers from executives regarding a wide variety of topics.
The company accepts several questions from retail investors through the platform Say, which then allows shareholders to vote on the best questions.
Tesla does not answer anything regarding future product releases, but they are willing to shed light on current timelines, progress of certain projects, and other plans.
There are five questions that range over a variety of topics, including SpaceX, Full Self-Driving, Robotaxi, and Optimus, which are currently in the lead to be asked and potentially answered by Elon Musk and other Tesla executives:
- You once said: Loyalty deserves loyalty. Will long-term Tesla shareholders still be prioritized if SpaceX does an IPO?
- Our Take – With a lot of speculation regarding an incoming SpaceX IPO, Tesla investors, especially long-term ones, should be able to benefit from an early opportunity to purchase shares. This has been discussed endlessly over the past year, and we must be getting close to it.
- When is FSD going to be 100% unsupervised?
- Our Take – Musk said today that this is essentially a solved problem, and it could be available in the U.S. by the end of this year.
- What is the current bottleneck to increase Robotaxi deployment & personal use unsupervised FSD? The safety/performance of the most recent models or people to monitor robots, robotaxis, in-car, or remotely? Or something else?
- Our Take – The bottleneck seems to be based on data, which Musk said Tesla needs 10 billion miles of data to achieve unsupervised FSD. Once that happens, regulatory issues will be what hold things up from moving forward.
- Regarding Optimus, could you share the current number of units deployed in Tesla factories and actively performing production tasks? What specific roles or operations are they handling, and how has their integration impacted factory efficiency or output?
- Our Take – Optimus is going to have a larger role in factories moving forward, and later this year, they will have larger responsibilities.
- Can you please tie purchased FSD to our owner accounts vs. locked to the car? This will help us enjoy it in any Tesla we drive/buy and reward us for hanging in so long, some of us since 2017.
- Our Take – This is a good one and should get us some additional information on the FSD transfer plans and Subscription-only model that Tesla will adopt soon.
Tesla will have its Earnings Call on Wednesday, January 28.
Elon Musk shared an incredible detail about Tesla Cybercab’s potential efficiency, as the company has hinted in the past that it could be one of the most affordable vehicles to operate from a per-mile basis.
ARK Invest released a report recently that shed some light on the potential incremental cost per mile of various Robotaxis that will be available on the market in the coming years.
The Cybercab, which is detailed for the year 2030, has an exceptionally low cost of operation, which is something Tesla revealed when it unveiled the vehicle a year and a half ago at the “We, Robot” event in Los Angeles.
Musk said on numerous occasions that Tesla plans to hit the $0.20 cents per mile mark with the Cybercab, describing a “clear path” to achieving that figure and emphasizing it is the “full considered” cost, which would include energy, maintenance, cleaning, depreciation, and insurance.
Probably true
— Elon Musk (@elonmusk) January 22, 2026
ARK’s report showed that the Cybercab would be roughly half the cost of the Waymo 6th Gen Robotaxi in 2030, as that would come in at around $0.40 per mile all in. Cybercab, at scale, would be at $0.20.
Credit: ARK Invest
This would be a dramatic decrease in the cost of operation for Tesla, and the savings would then be passed on to customers who choose to utilize the ride-sharing service for their own transportation needs.
The U.S. average cost of new vehicle ownership is about $0.77 per mile, according to AAA. Meanwhile, Uber and Lyft rideshares often cost between $1 and $4 per mile, while Waymo can cost between $0.60 and $1 or more per mile, according to some estimates.
Tesla’s engineering has been the true driver of these cost efficiencies, and its focus on creating a vehicle that is as cost-effective to operate as possible is truly going to pay off as the vehicle begins to scale. Tesla wants to get the Cybercab to about 5.5-6 miles per kWh, which has been discussed with prototypes.
Additionally, fewer parts due to the umboxed manufacturing process, a lower initial cost, and eliminating the need to pay humans for their labor would also contribute to a cheaper operational cost overall. While aspirational, all of the ingredients for this to be a real goal are there.
It may take some time as Tesla needs to hammer the manufacturing processes, and Musk has said there will be growing pains early. This week, he said regarding the early production efforts:
“…initial production is always very slow and follows an S-curve. The speed of production ramp is inversely proportionate to how many new parts and steps there are. For Cybercab and Optimus, almost everything is new, so the early production rate will be agonizingly slow, but eventually end up being insanely fast.”
BREAKING: Tesla launches public Robotaxi rides in Austin with no Safety Monitor
Tesla Earnings Call: Top 5 questions investors are asking
