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SpaceX’s second Super Heavy booster enters production in South Texas
In a rare burst of visible activity, SpaceX’s South Texas Starship factory has begun fabricating a second Super Heavy booster and taken a significant step forward on the first prototype.
Set to be the largest operational rocket stage ever built by more than a factor of two, Super Heavy is the booster tasked with launching a fully fueled and loaded Starship (~1400 mT or 3 million lbs) out of the bulk of Earth’s atmosphere. Powered by up to 28 Raptor engines, Super Heavy and Starship will weigh upwards of 5000 metric tons (~11 million lbs) and produce anywhere from 5600 to 7700 metric tons (12.5-17 million lbf) of thrust at liftoff.
Most importantly, though SpaceX CEO Elon Musk has noted that an optimized Starship might be able to reach orbit on a one-way trip, a giant, reasonably efficient booster like Super Heavy is necessary to send Starship into a healthy orbit with all the extra hardware and mass needed to make the orbital spaceship reusable. More than twice as heavy and two-thirds as tall as SpaceX’s workhorse Falcon 9 rocket, that will be no small feat.
Following the appearance of Super Heavy booster number 1’s (BN1) unique common dome, extra-large ‘transfer tube’ segments, and a donut-like eight-Raptor thrust section last month, visible booster work settled down for the next several weeks. In the interim, Musk revealed that SpaceX aims to hop the first Super Heavy booster (BN1) just “a few months” into 2021, followed by the bombshell that the CEO wants to eventually catch Super Heavy boosters to avoid the need for landing legs entirely.
Two weeks after that latest info from Musk and a month after major booster-related factory activity, the first hardware intended for Super Heavy prototype BN2 was spotted on January 19th. Featuring a never-before-seen structural addition in the form of what looks like a hexagonal or octagonal steel ring, the booster’s unique forward dome represents the first real evidence of the modifications needed to install a variety of hardware specific to Super Heavy.
The limited nature and number of current views make it hard to conclude with certainty that the BN2 forward dome’s add-on is hexagonal or octagonal – either could technically be made to work. Barring a surprise design change, Super Heavy – like Falcon 9 and Heavy boosters – will sport four equally spaced grid fins and use them to ensure aerodynamic stability and control authority from hypersonic to supersonic velocities. Based on official SpaceX graphics, Super Heavy’s grid fins will be built out of welded steel, measure some 7 meters (23 ft) tall, and likely weigh 5+ metric tons apiece, thus requiring extremely powerful actuation systems and strong structural support.
Meanwhile, beyond Super Heavy BN2’s first visible appearance, the process of assembling the first booster prototype also took a significant step forward. Sometime on January 19th, SpaceX ended a long period of inactivity, stacking the first Super Heavy ring sections since November 2020. More specifically, SpaceX teams appear to have installed either one or two four-ring sections on an existing booster segment already inside the high bay.
If at rest on top of the rest of the stack in Mary’s (BocaChicaGal) latest photo, one of two Super Heavy ‘stacks’ inside the high bay is now 12 rings (three sections) tall, representing almost a third of a complete 70-meter (~230 ft) tall booster. As of the most recent look inside the high bay, there were two separate stacks of Super Heavy rings – one with four and the other with eight. Based on the location of the new 12-ring stack, it’s more likely than not that SpaceX has simply combined the 12 rings last seen inside the high bay rather than adding one or two new ring sections to one of the two separate stacks.
Ultimately, the return of Super Heavy stacking activity after a two-month pause is an encouraging sign that SpaceX has settled on a design for the first few prototype boosters and could, in fact, be ready to start testing BN1 “a few months” from now.
Tesla has updated its Robotaxi app so riders can pick which vehicle they want before they book. The latest in-app screens now show two options side by side: the two-seat Cybercab and the four-seat Model Y.
A screenshot circulating Thursday shows the change in practice. In Austin, a rider could choose a gold Cybercab for two people or a Model Y for four. Tesla’s updated description calls Cybercab “our first purpose-built autonomous vehicle,” designed for safety, accessibility, and comfort, and says the lineup is available only through the Robotaxi app.
Tesla has updated their Robotaxi page in the App Store. You’ll be able to select if you want a Cybercab or Model Y Robotaxi.
“Our Robotaxi vehicle lineup now includes Cybercab, our first purpose-built autonomous vehicle. Designed for safety, accessibility and comfort, Cybercab… pic.twitter.com/Jff4klilDr
— Sawyer Merritt (@SawyerMerritt) September 3, 2026
The distinction is more than cosmetic, and it’s important to note that Robotaxi refers to the platform, while Cybercab refers to a vehicle.
Model Y Robotaxis have carried the service since it opened in Austin in mid-2025 and later expanded to Dallas, Houston, and parts of Florida. Those vehicles are converted production SUVs that still have steering wheels and pedals.
Cybercab is different. It has no driver controls, butterfly doors, a low seat height meant to work with wheelchairs, extra trunk space for assistive devices, and braille on the handles. Tesla has registered dozens of the two-seaters with Texas regulators in the days leading up to its September 3 Austin event.
Giving riders a choice lets Tesla match the vehicle to the trip. Most rides involve one or two people, which is where Cybercab is meant to be cheaper and more efficient to operate. Groups of three or four, or anyone who needs more space, can still request a Model Y.
The same app handles booking, payment, cabin settings, and, on Cybercab, features such as phone-based door opening and in-cabin voice controls.
The update does not mean every city suddenly has both cars available. Cybercab support is listed for Austin first, and the purpose-built fleet is still small compared with the existing Model Y roster. Even so, the app change marks a shift from a single-vehicle pilot to a mixed fleet.
Riders can now choose between the compact, purpose-built robotaxi and the familiar SUV that launched the service.
Tesla Cybercab sightings are broadening far and wide, well outside of downtown Austin, Texas, with autonomy in focus as the company plans to launch the all-electric, two-seater this evening in the Lone Star State.
Tesla is set to launch Cybercab to a small group of people this evening in a dedicated event in Austin, Texas. Public details on the event are relatively slim.
However, Tesla’s focus on Cybercab falls well outside of the downtown Austin area and is expanding well across the United States as things continue to move quickly with the company’s autonomous efforts in 2026. Today, various images of Cybercab fleets in interesting locations have started to circulate.
The most notable is a fleet of at least 20 Cybercabs at Miami International Airport in Florida. Spotted last night, the fleet is expansive and is indicative of a looming release of Cybercabs once regulatory boxes are checked off.
Tesla has already been operating the Robotaxi platform in Miami for several months, but this Cybercab fleet at the airport could be joining the ride-hailing platform as approvals arrive:
20+ Cybercabs spotted near Miami international airport. pic.twitter.com/ORLsw8yFhf
— Sawyer Merritt (@SawyerMerritt) September 3, 2026
Another fleet of Cybercabs was spotted at the Devon, PA showroom just outside of Philadelphia. We have seen several Cybercab units testing around the Philadelphia Metro Area, which is interesting considering Tesla does not have any active Robotaxi geofence in Pennsylvania.
Cybercab at the Devon location in PA has multiplied over the weekend. Seeing a few more test vehicles in the lot 👀 pic.twitter.com/DhJT4P1EkU
— Billy (@billykyle) August 22, 2026
Philadelphia would be an ideal location to test ride-hailing due to its dense tourist population, large, sprawling city layout, and to compete with other ride-hailing companies that operate in the city.
Expansive fleets of Cybercabs will be popping up in and around major cities throughout the rest of the year, if we were betting on it. Tesla has made it obvious that the Cybercab rollout will be aggressive and fast-paced, but within reason. Tesla is still prioritizing safety, so these testing phases will likely go on for some period of time before more members of the public are able to snag a Cybercab for a personal chariot.
The Tesla Model Y L is arguably the most hyped trim of the all-electric crossover, other than the Performance configuration that comes with white-knuckle speed and sports car-level handling.
However, it is not all perfect. Tesla owners in China who took delivery of the Model Y L, denoted with an L to highlight its longer wheelbase, are experiencing what they are referring to as “collapsing” of the rear wheels, as suspension issues appear to be an issue with some of the builds.
🚨 Model Y L owners in China report rear suspension sag
• Six-seat long-wheelbase Y. Shanghai. On sale since August 2025
• Owners say the rear tire-to-arch gap shrinks after mileage or a full load. Some cases after about 9,000 km loaded. Others near 30,000 km
• Tesla service… pic.twitter.com/Lr6i5Tbi07— Joe Hansen (@joehansen) September 1, 2026
The gap between the wheel arch and tire has narrowed to the point that “not even a single finger” could fit, according to a report from Car News China. The failures are not tied to a specific mileage, as one owner said that after just 9,000 kilometers (5,600 miles), they noticed the suspension issue when their car was fully loaded.
Another one had the issue at 30,000 kilometers (18,640 miles) and noticed that the wheel gap shrank to two fingers, so not as drastic as the person who reported a similar issue at 9,000 km.
Tesla Model Y L is gaining momentum in China’s premium segment
Along with the visual recognition of the issue, others are saying the sagging is causing abnormal wear on the inside of the tires. Extra weight and instant torque already provide additional stress on the tires in electric vehicles during normal operation, so it is no surprise that this is another complaint.
There has been no recall issued by Tesla, and the company has not yet publicly acknowledged the issue.
Some are suggesting that owners use a “finger test” to self-diagnose whether there is an issue with the suspension. There should be four fingers between the tire and the wheel well; anything less than that starts to get dicey.
Tesla Robotaxi riders will face the best dilemma when booking a ride
Tesla Cybercab sightings broaden well outside of Austin with autonomy in focus
