News
SpaceX CEO Elon Musk says Starship (BFS) hop tests could start in early 2019
SpaceX CEO Elon Musk has taken to Twitter to share an unexpected wealth of detail about the “radical” and largely unpublicized design changes the company’s Starship and Super Heavy (BFS & BFB) have undergone in 2018.
Beside information ranging from discussions of metallurgy to overall design philosophy and comparisons, the eccentric CEO also offered the most concrete target yet for the beginning of prototype spaceship (BFS/Starship) hop tests in South Texas – “March/April [2019]”.
I will do a full technical presentation of Starship after the test vehicle we’re building in Texas flies, so hopefully March/April
— Elon Musk (@elonmusk) December 22, 2018
On one hand, this expeditious new testing schedule – acknowledged by Musk himself to be “much sooner than expected” – is a thrilling prospect, given that it implies that a nearly full-scale prototype of Starship (or something vaguely approximating the spacecraft) could take its first baby steps into the air as early as the first quarter of 2019. On the other hand, however, this is an almost bafflingly large schedule change considering that SpaceX President and COO Gwynne Shotwell asserted that a prototype of BFS (now Starship) could begin “hopping” by late 2019, speaking in September 2018.
Shotwell: think we’ll be “hopping” the second stage of BFR (the BFS) late next year. #DARPA60
— Jeff Foust (@jeff_foust) September 6, 2018
Schedules (especially aerospace program schedules) do certainly tend to be chaotic and jumpy, but it’s almost inconceivable that any given project – regardless of the scope or scale – could wind up reaching completion nine months earlier than previously forecasted without suffering one or several dramatic compromises, typically involving lower-fidelity testing and prototypes or watered-down deliverables. It’s unclear if BFR has suffered the same fate, but – to put it lightly – the South Texas sight greeting the eyes of close followers of SpaceX’s BFR program is downright unbelievable.
BFWhat?!
Given the very recent and conspicuous additions of triangular appendages that look precisely like rudimentary fins and an obvious nose cone assembly, the only possible conclusion to draw from photos of SpaceX’s Boca Chica facilities taken in the last week or two is that the company (and/or contractors) are busy building something related to Starship. At least in these early stages, the… thing being built could be best described as what might come to mind if you asked an imaginative kid to build a full-scale sculpture of Tintin’s spaceship on a budget of maybe $500,000.
You got something to show us in Texas? pic.twitter.com/vBF0WwwIfF
— Robotbeat🗽 ➐ (@Robotbeat) December 22, 2018
More likely than not, this could be a case of things being more than they seem. To most, it may almost look like an elaborate prank, but that assumes that we know the full story and have a decent working understanding of aerospace prototyping. For the vast majority of us, that is simply not the case – what looks like a spade is probably not a spade.
At the end of the day, the most basic of observations – that this purported ‘Starship prototype’ will begin hop tests with extraordinarily powerful Raptor engines installed as few as three months from now – suggest that this spooky metal contraption will be used to conduct the most basic of Starship tests. As such, it will probably never travel much faster than Falcon 9’s Grasshopper and F9R predecessors, which tended to gently accelerate from the ground to as high as a kilometer or two before slowly heading back down for a powered landing.
-
- What now seem to be extremely rough fin outlines were welded to the main steel cylinder like giant metal straws. (bocachicagal – NASASpaceflight)
-
- ¯\_(ツ)_/¯ (bocachicagal – NASASpaceflight)
-
- SpaceX recovery technicians work on Falcon 9 with similar cherry-picker lifts, offering a sense of scale of the new Starship water tower. (Pauline Acalin)
-
- A conspicuous nosecone appears to have arisen inside SpaceX’s new Boca Chica tent, adjacent to what looks like a water tower with tube legs. (bocachicagal – NASASpaceflight)
-
- (bocachicagal – NASASpaceflight)
Given that SpaceX has already refined this complex and challenging task to a reliable science with Falcon 9 and Merlin 1D, it’s unclear why a very similar test campaign would be of serious value to the company without simultaneously testing full-fidelity control surfaces (fins), exotic new stainless steel propellant tank technologies, and more. Perhaps SpaceX just really wants to ensure that Starship will be capable of landing and taking off from an unprepared and angled surface of the type it could (will?) experience on Mars. Maybe the company simply wants to have a bare-minimum flying platform capable of testing and refining multi-engine configurations of Raptor.
All that can be said for sure at the moment is that the public simply does not have the full story to explain the moderately shocking activity going on in Boca Chica. Musk did state that he would provide another technical update on the status of Starship and the BFR program as a whole in the first half of 2019, but only after the first Starship hopper flights have begun. It would seem that those on the sidelines will simply have to wallow in confusion and wild speculation for another ~3-4 months at minimum, hopefully only going moderately insane as a result.
In the meantime, copious thanks are owed to NASASpaceflight members bocachicagal and Nomadd for their relentless and thorough coverage of SpaceX’s activities in the obscure far south of the Texan coast, as well as their courteous permission for media outlets like Teslarati to republish their photos. Cheers!
For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!
Elon Musk
Tesla Terafab set for launch: Inside the $20B AI chip factory that will reshape the auto industry
Tesla set to launch “Terafab Project: A vertically integrated chip fabrication effort combining logic processing, memory, and advanced packaging.
Tesla is making one of the boldest bets in its history. On March 14, Elon Musk posted on X that the “Terafab Project launches in 7 days,” pointing to March 21, 2026 as the start date for what he has described as a vertically integrated chip fabrication effort combining logic processing, memory, and advanced packaging.
Tesla first confirmed Terafab on its January 28, 2026 earnings call, where Musk told investors the company needs to build a chip fabrication facility to avoid a supply constraint projected to materialize within three to four years. But the seeds were planted even earlier. At Tesla’s annual general meeting last year, Musk warned that even in the best-case scenario for chip production from their suppliers, it still wouldn’t be enough, and declared that building a “gigantic chip fab” simply had to be done.
While there has been no official announcement on where Tesla plans to break ground on the massive Terafab, all signs point to the North Campus of Giga Texas in Austin.
Months of speculation has surrounded Tesla’s North Campus expansion at Giga Texas, where drone footage captured by observer Joe Tegtmeyer revealed massive construction site preparation just north of the existing factory on a scale that rivals the original Giga Texas footprint itself.
Samsung’s Tesla AI5/AI6 chip factory to start key equipment tests in March: report
The project is projected to produce 100–200 billion AI and memory chips annually, targeting 100,000 wafer starts per month, at an estimated cost of $20 billion. Tesla is targeting 2-nanometre process technology and anticipated to be the most advanced node currently in commercial production. Dubbed the Tesla AI5 chip, the chip will pack 40x–50x more compute performance and 9x more memory than AI4, and will be among the first products Terafab factory is set to produce. This highly optimized, and massively powerful inference chip is designed to make full self-driving (FSD) and Tesla’s Optimus robots faster, safer, and with full autonomy.
(Credit: Tesla)
This is where Terafab becomes a genuine game-changer. If Tesla successfully builds a 2nm chip fab at scale, it becomes one of only a handful of entities that’s capable of producing AI silicon in-house, with competitive implications that extend far beyond Tesla’s own vehicles, and potentially positioning Tesla as a chip supplier or licensor to other industries.
Credit: @serobinsonjr/X
The next-gen Tesla AI chips will power advancements in Full Self-Driving software, the Cybercab Robotaxi program, and the Optimus humanoid robot line. Musk’s projections for Optimus require chip volumes that no existing external supplier can commit to on Tesla’s timeline.Competitors like Waymo and GM’s Cruise remain dependent on third-party silicon, leaving them exposed to the same supply chain vulnerabilities Tesla is now working to eliminate entirely.
The Terafab launch this week may not mean a factory opens its doors overnight, but it signals Tesla is serious about owning the entire AI stack, from software to silicon.
Elon Musk
What is Digital Optimus? The new Tesla and xAI project explained
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Tesla and xAI announced their groundbreaking joint project, Digital Optimus, also nicknamed “Macrohard” in a humorous jab at Microsoft, earlier this week.
This software-based AI agent is designed to automate complex office workflows by observing and replicating human interactions with computers. As the first major outcome of Tesla’s $2 billion investment in xAI, it represents a powerful fusion of hardware efficiency and advanced reasoning.
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Macrohard or Digital Optimus is a joint xAI-Tesla project, coming as part of Tesla’s investment agreement with xAI.
Grok is the master conductor/navigator with deep understanding of the world to direct digital Optimus, which is processing and actioning the past 5 secs of…
— Elon Musk (@elonmusk) March 11, 2026
Tesla’s specialized AI acts as “System 1”—the fast, instinctive executor—processing the past five seconds of real-time computer screen video along with keyboard and mouse actions to perform immediate tasks.
xAI’s Grok model serves as “System 2,” the strategic “master conductor” or navigator, providing high-level reasoning, world understanding, and directional oversight, much like an advanced turn-by-turn navigation system.
When combined, the two can create a powerful AI-based assistant that can complete everything from accounting work to HR tasks.
Will Tesla join the fold? Predicting a triple merger with SpaceX and xAI
The system runs primarily on Tesla’s low-cost AI4 inference chip, minimizing expensive Nvidia resources from xAI for competitive, real-time performance.
Elon Musk described it as “the only real-time smart AI system” capable, in principle, of emulating the functions of entire companies, handling everything from accounting and HR to repetitive digital operations.
Timelines point to swift deployment. Announced just days ago, Musk expects Digital Optimus to be ready for user experience within about six months, targeting rollout around September 2026.
It will integrate into all AI4-equipped Tesla vehicles, enabling parked cars to handle office work during downtime. Millions of dedicated units are also planned for deployment at Supercharger stations, tapping into roughly 7 gigawatts of available power.
Oh and it works in all AI4-equipped cars, so your car can do office work for you when not driving.
We’re also deploying millions of dedicated Digital Optimus units in the field at Superchargers where we have ~7 gigawatts of available power.
— Elon Musk (@elonmusk) March 12, 2026
Digital Optimus directly supports Tesla’s broader autonomy strategy. It leverages the same end-to-end neural networks, computer vision, and real-time decision-making tech that power Full Self-Driving (FSD) software and the physical Optimus humanoid robot.
By repurposing idle vehicle compute and extending AI4 hardware beyond driving, the project scales Tesla’s autonomy ecosystem from roads to digital workspaces.
As a virtual counterpart to physical Optimus, it divides labor: software agents manage screen-based tasks while humanoid robots tackle physical ones, accelerating Tesla’s vision of general-purpose AI for productivity, Robotaxi fleets, and beyond.
In essence, Digital Optimus bridges Tesla’s vehicle and robotics autonomy with enterprise-scale AI, promising massive efficiency gains. No other company currently matches its real-time capabilities on such accessible hardware.
It really could be one of the most crucial developments Tesla and xAI begin to integrate, as it could revolutionize how people work and travel.
News
Tesla adds awesome new driving feature to Model Y
Tesla is rolling out a new “Comfort Braking” feature with Software Update 2026.8. The feature is exclusive to the new Model Y, and is currently unavailable for any other vehicle in the Tesla lineup.
Tesla is adding an awesome new driving feature to Model Y vehicles, effective on Juniper-updated models considered model year 2026 or newer.
Tesla is rolling out a new “Comfort Braking” feature with Software Update 2026.8. The feature is exclusive to the new Model Y, and is currently unavailable for any other vehicle in the Tesla lineup.
Tesla writes in the release notes for the feature:
“Your Tesla now provides a smoother feel as you come to a complete stop during routine braking.”
🚨 Tesla has added a new “Comfort Braking” update with 2026.8
“Your Tesla provides a smoother feel as you come to a complete stop during routine braking.” https://t.co/afqCpBSVeA pic.twitter.com/C6MRmzfzls
— TESLARATI (@Teslarati) March 13, 2026
Interestingly, we’re not too sure what catalyzed Tesla to try to improve braking smoothness, because it hasn’t seemed overly abrupt or rough from my perspective. Although the brake pedal in my Model Y is rarely used due to Regenerative Braking, it seems Tesla wanted to try to make the ride comfort even smoother for owners.
There is always room for improvement, though, and it seems that there is a way to make braking smoother for passengers while the vehicle is coming to a stop.
This is far from the first time Tesla has attempted to improve its ride comfort through Over-the-Air updates, as it has rolled out updates to improve regenerative braking performance, handling while using Full Self-Driving, improvements to Steer-by-Wire to Cybertruck, and even recent releases that have combatted Active Road Noise.
Tesla holds a unique ability to change the functionality of its vehicles through software updates, which have come in handy for many things, including remedying certain recalls and shipping new features to the Full Self-Driving suite.
Tesla seems to have the most seamless OTA processes, as many automakers have the ability to ship improvements through a simple software update.
We’re really excited to test the update, so when we get an opportunity to try out Comfort Braking when it makes it to our Model Y.
Tesla Terafab set for launch: Inside the $20B AI chip factory that will reshape the auto industry
What is Digital Optimus? The new Tesla and xAI project explained
