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SpaceX CEO Elon Musk kills mini BFR spaceship 12 days after announcing it
Less than two weeks after SpaceX CEO Elon Musk announced that Falcon 9’s “second stage [would] be upgraded…like a mini-BFR Ship” to prove lightweight heatshield and hypersonic control surface technologies, Musk took to Twitter to assert that the mini BFR spaceship project was dead, despite having stated that SpaceX was working to launch that test article into orbit as early as June 2019 just 12 days prior.
From a public perspective, the status of SpaceX’s next-gen rocket program (known as BFR) is effectively up in the air after several cryptic and seemingly contradictory statements from the company’s CEO and chief engineer.
No, we’re just going to accelerate BFR
— Elon Musk (@elonmusk) November 20, 2018
On Nov. 17, Musk tweeted that BFR – last updated in September 2018 alongside a statement that “this is [likely] the the final iteration [of BFR] in terms of broad architectural decisions” – had already been redesigned, going so far as to describe it as a “radical change”. What that radical design change might be is almost entirely unclear, although Musk has now twice stated that the purpose of these changes (and the whiplash-inducing cancellation of the mini-spaceship) is to “accelerate BFR”.
Radical change
— Elon Musk (@elonmusk) November 17, 2018
As of now, SpaceX appears to have just completed a massive 9-meter diameter composite tank dome in the company’s temporary Port of Los Angeles tent, where a small but growing team of engineers and technicians are working to realize some version of the company’s next-generation rocket. That group has been working in near-silence for the better part of a year and has accepted delivery of and set up a wide range of custom-built tooling for carbon composite fabrication, and has even managed to get that tooling producing massive composite parts that are expected to eventually make up the structure of a spaceship prototype.
That prototype would eventually be shipped to South Texas, where SpaceX is constructing an entirely new facility from scratch to test the design, technology, and operation of the first full-scale BFR spaceship (BFS). As of a few months ago, the plan was to begin those hop tests before the end of 2019, but it’s no longer clear if SpaceX still intends to build a prototype spaceship to conduct hops and high-speed, high-altitude test flights.
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- BFR’s spaceship design, as of 2018. (SpaceX)
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- A BFS attempts a Mars landing in this official updated render. (SpaceX)
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- SpaceX’s huge Port of LA-based BFR tent, September 18th. (Pauline Acalin)
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- SpaceX’s first BFR spaceship prototype is coming together piece by piece. (SpaceX/Pauline Acalin)
Responsibly building giant rockets
One can only hope that the SpaceX employees tasked with bringing an already monumentally difficult idea from concept to reality are learning about these earth-shaking, “radical” decisions and changes through a medium other than Twitter. If those senior engineers and technicians are not extensively forewarned and given some say in these major system-wide decisions, it’s hard to exaggerate the amount of time, effort, and resources potentially being wasted (or at least misdirected).
There is undoubtedly something to be said for getting complex and difficult things as right as possible on the first serious try, especially when the sheer expense of the task at hand might mean that there is only one real chance to try. Still, it’s not particularly encouraging when a three-year-old hardware development program marked by several major design iterations is still experiencing anything close to “radical change”. After multiple years of concerted effort, BFR still appears to be in some sort of design limbo, where a constant and haphazard stream of on-paper changes act as a near-insurmountable hurdle standing in the way of a completed “good enough” blueprint that can begin to be made real.
Ultimately, even if some of the worst-case scenarios described above turn out to be true, there are still many, many reasons to remain positive about SpaceX’s BFR program on the whole. The next-gen rocket’s propulsion system of choice – an advanced engine known as Raptor – is quite mature at this point and may already be nearing initial flight readiness. Regardless of any future changes to BFR’s overall spaceship and booster structures, SpaceX technicians, engineers, and material scientists have likely gained invaluable experience in pursuit of an unprecedented 9-meter diameter rocket built almost entirely out of carbon fiber composites.
Further, it appears that quite a bit of progress has been made over the course of R&D programs related to methane-oxygen RCS thrusters (Falcon uses nitrogen), autogenous tank pressurization with gaseous methane and oxygen (Falcon uses helium), and perhaps even in-situ resource utilization (ISRU) that will be an absolute necessity to generate water, oxygen, and methane that will keep prospective Mars colonists alive and refuel spaceships for the voyage back to Earth.
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- SpaceX’s horizontal Raptor test stand is pictured here in April 2018. A prototype Raptor can be seen in the center bay. (Aero Photo/Teslarati)
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- A new rocket test-stand takes shape at SpaceX’s McGregor, TX facilities. As of just a few months ago, this site was effectively barren of activity. (April 17, Aero Photo)
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- SpaceX’s Boca Chica facilities now sport two massive propellant tanks, meant to support BFR spaceship hop tests. (NSF /u/ bocachicagal, SpaceX)
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Elon Musk
Elon Musk handed Grok something no other AI company can get their hands on
Elon Musk says SpaceX will feed engineering data into Grok’s next model, avoiding restricted material.
Elon Musk said Tuesday that SpaceX will feed its internal engineering data into the next major training run for Grok, the AI model now folded into SpaceX following February’s merger. In a post on X, Musk wrote that SpaceX’s “massive corpus of world-class engineering data,” excluding anything restricted under U.S. arms export law, will be added during supplemental training of what he called the “2T run,” a reference to a roughly two trillion parameter model that would nearly double the parameters behind the latest Grok 4.5 that’s rolling out.
SpaceX’s massive corpus of world-class engineering data (excluding material blocked by ITAR) will be added during supplemental training of the 2T run.
This will dramatically improve Grok’s engineering capabilities. https://t.co/BbQEViFByn
— Elon Musk (@elonmusk) July 21, 2026
The excluded material that Musk is referring to would fall under the International Traffic in Arms Regulations (ITAR), which restricts export of technical data tied to defense and space hardware. That likely rules out propulsion specifics for Merlin and Raptor engines along with guidance and control details for SpaceX’s launch vehicles, but leaves manufacturing knowledge, materials science, and Starlink hardware design on the table.
The announcement extends a pattern that has been building since SpaceX’s Nasdaq debut in June, when the company went public with Grok and xAI’s Colossus supercomputer folded into the pitch to investors.
Days after that listing, SpaceX closed its $60 billion all stock acquisition of coding startup Cursor, giving xAI both enterprise software distribution and a stream of real world developer data to train on. Grok 4.5 launched July 8 running partly on that Cursor training data, with Musk describing it as roughly comparable to Anthropic’s Opus 4.7 but faster and cheaper to run.
Feeding SpaceX’s own engineering data into the next AI model follows the same logic Musk has applied across xAI’s sister companies. Tesla supplies real world driving data and manufacturing expertise, X supplies conversational data, and now SpaceX supplies aerospace engineering data built up since 2002.
Musk did not give a release date for the upcoming AI model, referred to elsewhere as Grok 4.6. He has said the two trillion parameter run is in its final training phase and expected to wrap this week.
Tesla has extended its Bay Area ride-hailing service to include pickups and drop-offs at San Francisco International Airport (SFO). The update, shared via the company’s official channels on July 21, allows users in the region to request rides directly to and from one of California’s busiest airports.
The expansion builds on Tesla’s secured limousine permit for SFO operations. Public records show the permit became effective March 20, 2026, and remains active through January 31, 2027. Tesla vehicles operating the service now display authorized limousine permits issued by the City and County of San Francisco.
Our Bay Area rideshare service now goes to SFO ✈️
— Tesla AI (@Tesla_AI) July 21, 2026
Tesla’s ride-hailing program in California relies on Model Y vehicles equipped with Full Self-Driving (Supervised) technology. Human safety drivers remain present in compliance with state regulations, distinguishing the service from fully driverless operations.
The Bay Area geofence covers a broad area spanning north of San Francisco to south of San Jose, offering extensive connectivity across the region.
UPDATE: Elon Musk reveals why Tesla didn’t say ‘Robotaxi’ upon California launch
This SFO addition follows earlier progress at other Bay Area airports. Tesla previously expanded service to San Jose Mineta International Airport (SJC) in late 2025. The company had engaged with SFO, SJC, and Oakland International Airport officials as early as September 2025 to secure necessary approvals for passenger transport.
The service provides a new option for travelers seeking electric, app-based transportation integrated with Tesla’s ecosystem. Rides are booked through Tesla’s dedicated ride-hailing application, which handles matching, routing, and payments. Pricing follows standard ride-hailing models, with potential adjustments based on distance, time, and demand.
Tesla’s California ride-hailing program launched in July 2025 with an initial invite-only rollout in the Bay Area. It started alongside operations in Austin, Texas, marking the company’s second major U.S. market.
The Bay Area remains a primary focus in California, with service centered on high-demand corridors connecting residential, commercial, and now major transportation hubs. This latest airport integration represents a practical step in Tesla’s broader mobility ambitions within the state.
Tesla has officially revealed its 2026 Summer Update, which comes with a variety of crazy new features, including Navigation fixes that owners have been wanting for months.
Tesla routinely releases a larger update with the Spring, Summer, Fall, and Winter updates, where it ships a variety of new features, bug fixes, and other additions to customer cars.
The 2026 Spring Update featured things like “Hey Grok” voice assistance, a redesigned self-driving app, Unreal Engine visual upgrades, and more.
🚨 TESLA’S SUMMER UPDATE FOR 2026 IS HERE:
Featuring:
✅ Self-Driving Stats in Mobile App
✅ Caraoke with Scoring
✅ Automatic Navigation
✅ Preferred Routes
✅ Set Arrival Energy from Mobile App
✅ Send Custom Wraps from Mobile App
✅ Rear Display Lock
✅ Other Improvements
🔌… https://t.co/C9IW3egEhH— TESLARATI (@Teslarati) July 21, 2026
Tesla’s Summer Release has about ten new features; we’ll show you each and detail them below:
New Grok Voice Commands
“Grok can now make phone calls, search and play music, adjust climate, open the glovebox, and answer questions about your Tesla.”
Self-Driving Stats in Mobile App
“View and share self-driving stats from the mobile app.”
Caraoke With Scoring
“Caraoke now scores your singing while in Park. High scores are saved to your Tesla profile.”
Automatic Navigation
“Automatic Navigation now adapts to your routine.
In addition to Home, Work, and upcoming calendar events, your vehicle can now suggest and route to places you visit regularly – like a school drop-off on the way to work, or the gym on the way home.”
Preferred Routes
“For a more personalized experience, navigation now prioritizes routes that you’ve taken before”
Set Arrival Energy from Mobile App
“Set your desired Arrival Energy from your phone.”
Send Custom Wraps from Mobile App
“Skip the USB drive and upload a custom wrap of your car from the mobile app. Instructions for creating a custom wrap here: https://github.com/teslamotors/custom-wraps.”
Rear Display Lock
“Kids can watch content on the rear screen, but only the front row can control it through the rear screen app.”
Other Improvements
- Find Superchargers by name when searching for a destination
- Add Apple Music songs to queue from search and artist page
- Set your preferred zoom level for the Self-Driving visualization
- Intro animations for new Model 3 and Y
Elon Musk handed Grok something no other AI company can get their hands on
Tesla expands ridesharing service in California to new hotspot
