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SpaceX’s first orbital-class Super Heavy booster rejoins Starship at the launch pad
For the second time in five weeks, SpaceX has rolled Starship’s first orbital-class Super Heavy booster from its Starbase factory to the launch pad ahead of a challenging and multifaceted test campaign.
Deemed Super Heavy Booster 4 or B4, the 69m (~225 ft) tall rocket first rolled to the launch pad around August 3rd after SpaceX technicians fitted it with 29 Raptor engines in a single night. Followed by orbital-class Starship prototype S20 a few days later, the two stages of a Starship were stacked to their full height on August 6th, briefly creating the largest rocket ever assembled. Ship 20 was then quickly returned to the build site, where SpaceX workers completed an additional ~10 days of finishing touches – mainly focused on avionics wiring and secondary plumbing.
A week later, Booster 4 followed Ship 20 back to Starbase’s ‘high bay,’ where teams ultimately removed all 29 of its Raptor engines and spent the next four or so weeks performing similar final integration work. Now, after installing what looks like hundreds of feet of wiring, dozens of additional gas and fluid lines, compressed gas tanks, hydraulic ‘sleds’ SpaceX’s first flightworthy Super Heavy has once again returned to the launch site
A bit less than two weeks ago, SpaceX once again installed 29 Raptors on Booster 4. This time around, though, all of those engines are believed to be ready for flight – or, at minimum, static fire testing – after completing qualification testing at SpaceX’s Central Texas development facilities. Intriguingly, every one of Super Heavy’s outer ring of 20 ‘Raptor Boost’ engines is also expected to have its own small umbilical panel that will connect to the orbital launch pad’s ground systems.
When Booster 4 was installed on the brand new orbital launch mount, most of those individual engine connectors had yet to be installed and it’s unclear if SpaceX was actually able to test the complex mechanisms before Super Heavy returned to the build site. This time, all 20 engine umbilical actuators have been installed on the launch mount and it’s safe to assume that those mechanisms will be tested extensively in the coming weeks.
That testing will be part of a much more involved test campaign. Namely, if SpaceX intends to test Super Heavy Booster 4 at the orbital launch site, any booster testing will simultaneously require the shakedown of the orbital pad’s extensive, custom-built tank farm and a wide range of other ground infrastructure that simply didn’t exist at the start of 2021. Booster 4 qualification is no less daunting, as no Super Heavy has ever been fully tested. Now in the midst of being scrapped in place at SpaceX’s suborbital test facilities, Super Heavy Booster 3 did complete a partial cryogenic proof test and a static fire with three Raptor engines, but SpaceX has never fully filled a Super Heavy with >3000 tons (~6.6M lb) of propellant and never static fired more than three Raptor engines simultaneously.
Perhaps the most uncertain part of Super Heavy Booster 4 qualification is its static fire test campaign. However SpaceX gets there, the final challenge will likely be igniting all 29 of B4’s Raptor engines – potentially producing up to ~5400 tons (11.9M lbf) of thrust, thus making Super Heavy the most powerful rocket booster ever tested.
Simultaneously, SpaceX also began reinstalling Raptors on Ship 20 – currently installed at Suborbital Pad B – ahead of the Starship’s first proof test(s) and static fire(s). Stay tuned for updates on SpaceX’s plans for testing the first orbital-class Starship and Super Heavy booster.
News
Tesla Sweden faces new pressure in Sweden as Assa Abloy joins union action
The sympathy strike will block Assa Abloy’s 330 employees across six Swedish facilities from servicing or maintaining locks and gates used at Tesla Sweden’s sites.
The labor standoff between Tesla and Sweden’s IF Metall union has widened again, this time pulling in Assa Abloy Industrial, a manufacturer of industrial doors and locks.
IF Metall announced a new sympathy strike halting all Assa Abloy services for Tesla, set to take effect November 4, according to Dagens Arbete (DA). The move is aimed at further pressuring Tesla into signing a collective agreement after nearly two years of ongoing labor conflict.
New strike targets Tesla’s industrial operations
The sympathy strike will block Assa Abloy’s 330 employees across six Swedish facilities from servicing or maintaining locks and gates used at Tesla Sweden’s sites. IF Metall hopes the measure will disrupt Tesla’s daily operations and highlight the growing solidarity among Swedish companies.
Assa Abloy becomes the latest in a line of firms drawn into the dispute, with the Swedish Mediation Institute now logging fourteen conflict notices since September. The escalation shows that unions and partner industries are aligning to support of IF Metall’s campaign to secure a collective bargaining deal, something Tesla has consistently resisted.
IF Metall says Tesla must understand Sweden’s labor model
IF Metall chair Marie Nilsson recently reiterated her call for Tesla Sweden to reconsider its stance on organized labor, noting that Sweden’s union system differs sharply from the more adversarial model in the United States.
“I can certainly understand that Elon Musk and Tesla are skeptical of the trade union movement,” Nilsson said. “They have experience with American unions that operate in a completely different environment and that have to be militant in a different way.”
Nilsson emphasized that Swedish unions function cooperatively and that signing a collective agreement locally does not commit Tesla to similar deals elsewhere. “Let’s give us a chance,” she added. “It is the practical system we have here to regulate the conditions.”
News
Elon Musk: Tesla autonomous driving might spread faster than any tech
The CEO noted that “hardware foundations have been laid for such a long time.”
Elon Musk has shared one of his most optimistic forecasts for Tesla’s self-driving rollout yet. As per the CEO, Tesla’s self-driving system could see the fastest technological adoption in history, thanks to the fleet’s capability to gain autonomous capabilities through a software update.
The CEO shared his forecast in a post on social media platform X.
Tesla’s aims to scale autonomy
Musk’s comment came as a response to industry watcher Sawyer Merritt, who posted a comparison between the geofence of Tesla’s Robotaxi network and Waymo’s service area. As can be seen in the graphic, Tesla’s Austin geofence has gotten noticeably larger compared to Waymo’s service area.
In his response, Musk stated that “Tesla autonomous driving might spread faster than any technology ever.” He also stated that “hardware foundations have been laid for such a long time,” as a software update could unlock full autonomy “for millions of pre-existing cars in a short period of time.”
Musk’s comment bodes well for Tesla’s Robotaxi ambitions, which seem to be finally in reach with the deployment of Unsupervised FSD in vehicle factories, as well as Austin and the Bay Area. For now, however, Tesla’s Austin Robotaxis and Bay Area ride-hailing vehicles are still operated with a safety monitor in the driver’s seat.
Tesla’s latest Austin expansion
Tesla recently expanded its Austin Robotaxi service area this week to 243 square miles, its largest yet and nearly triple the coverage from two months ago. The move outpaces Waymo’s local service footprint, which remains at around 90 square miles.
The expansion marks Tesla’s second major Austin update since August and emphasizes its push to dominate the autonomous ride-hailing landscape. With both Tesla and Waymo racing to prove scale and reliability, Musk’s confidence suggests the real contest may be about who can move fastest once the tech flips on across Tesla’s fleet. Once that happens, Tesla would effectively be able to win the self-driving race.
News
Tesla sends clear message to Waymo with latest Austin Robotaxi move
It is the first expansion Tesla has made in Austin since the one on August 26. The company still operates in the Bay Area of California as well, referring to that program specifically as a “ride-hailing service.”
Tesla has sent a clear message to Waymo with its latest move to its Robotaxi program in Austin, Texas.
Tesla and Waymo are the two true leaders in autonomous ride-hailing to an extent. Tesla has what many believe is a lot of potential due to its prowess with the Supervised Full Self-Driving suite. It is also operating a driverless Robotaxi service in Austin with a “Safety Monitor” that sits in the passenger’s seat.
Tesla explains why Robotaxis now have safety monitors in the driver’s seat
The two companies have been competing heavily in the market since they both launched driverless ride-hailing services in Austin this year: Waymo’s in March and Tesla’s in June.
One of the main drivers in the competition between the two is service area size, or the geofence in which the cars will operate without a driver. In August, the two were tied with a service area of about 90 square miles (233.099 sq. km).
Tesla then expanded to about 170 square miles (440.298 sq. km) on August 26, dwarfing Waymo’s service area and expanding to freeways. Tesla’s freeway operation of the Robotaxi suite requires the Safety Monitor to be in the driver’s seat for safety reasons.
On Tuesday evening, Tesla made another move that sent a clear message to Waymo, as it expanded once again, this time to 243 square miles (629.367 sq. km).
This is according to Robotracker:
Here’s a comparison of Tesla’s geofence in Austin vs. Waymo’s
Tesla’s now spans 243 square miles, almost three times the size of Waymo’s at 89 square miles https://t.co/OCAHQDQhzb pic.twitter.com/wq5bHQXCp4
— TESLARATI (@Teslarati) October 29, 2025
It is the first expansion Tesla has made in Austin since the one on August 26. The company still operates in the Bay Area of California as well, referring to that program specifically as a “ride-hailing service.”
Yesterday, it expanded that service to the San Jose Mineta International Airport, something it has been working on for several months.
Waymo has its own set of distinct advantages over Tesla as well, as it operates in more cities and states than the EV maker. Waymo currently has its autonomous vehicle services in Phoenix, Arizona, San Francisco, Los Angeles, Austin, and Atlanta, Georgia.
Tesla plans to have half of the U.S. population with access to the Robotaxi platform by the end of the year.
Tesla Sweden faces new pressure in Sweden as Assa Abloy joins union action
Elon Musk: Tesla autonomous driving might spread faster than any tech
Tesla sends clear message to Waymo with latest Austin Robotaxi move
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