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SpaceX’s fourth Starship prototype has begun to take shape in Florida
SpaceX’s Florida Starship team appears to have taken the first step towards assembling Starship Mk4, the fourth full-scale prototype of the next-generation spaceship.
Although SpaceX’s Boca Chica, Texas Starship campus is undeniably in the lead with their first prototype, Starship Mk1, it appears that the company’s Florida campus is far ahead of Texas with their second Starship prototype.
At the moment, SpaceX has set up two separate Starship build teams in Florida and Texas with the intention of creating a sort of internal competition to see which group’s Starships are first to flight and first to orbit. For the most part, it’s assumed that this “competition” is less a fight to the finish line than it is an A/B test, a common software development practice in which separate teams pursue different methods of achieving the same goals.
In the likely event that SpaceX is performing a radical form of A/B testing with rocket prototypes, both teams are continuously sharing best-practices and lessons-learned as they work to find the best possible methods for fabricating hardware and assembling Starships. Nevertheless, in A/B testing, fundamentally different approaches also tend to result in development schedules and final products that are unique, even if the end results are similar.
In the context of Starship, this is exactly what can be observed at SpaceX’s Florida and Texas facilities. Similarities abound in the radical method of en plein air manufacturing being implemented, while the Starship Mk1 and Mk2 hardware being built and assembled are also relatively similar, even if they have some distinct characteristics.
For example, it’s been observed that Starship Mk2 has almost certainly been constructed out of steel rings that are significantly taller than those used to assemble Starship Mk1. Taller rings meant that Mk2 needed fewer overall rings to reach the same height as Mk1, a fact that likely contributed to the impressive speed with which SpaceX’s Florida team was able to stack and weld most of Starship Mk2’s aerostructure.
Star(ship)fleet
According to SpaceX CEO Elon Musk, those similarities (and slight differences) are likely to continue for at least several more generations of prototypes. At a September 28th presentation and update on Starship, Musk revealed his opinion that Starship could be ready for its first orbital test flight(s) as few as six months from then – sometime in Q2 2020, give or take. To get there, Musk estimated that at least 5-6 Starship prototypes would need to be built in the interim.
Starship Mk3 will be built in Texas – in fact, the first ‘seamless’ steel ring may have already been fabricated at SpaceX’s Boca Chica facilities. According to Musk, Starship Mk4 will be SpaceX Cocoa’s second prototype. Based on John Winkopp’s October 17th drone overview, it appears that SpaceX’s Florida team has mounted the first steel Starship Mk4 ring atop a new work mount, potentially marking the start of Starship Mk4 assembly.
SpaceX’s Texas team has prepared at least one full-scale sample of a single-weld (‘seamless’) steel ring, perhaps the start of Mk1’s successor, Starship Mk3. Meanwhile, SpaceX Cocoa – seemingly at some kind of impasse with the final integration and assembly of Starship Mk2 – has churned out a huge number of similarly smooth steel rings, to the extent that Teslarati previously (and incorrectly) surmised that the first Super Heavy booster was being fabricated.
During Musk’s September 28th presentation, he effectively confirmed that the almost two-dozen steel rings hanging out on SpaceX’s Cocoa, Florida campus were almost certainly the beginnings of Starship Mk4. However, given the sheer number of rings present (23), the reality is that what could be the entirety of Starship Mk4’s cylindrical tank and thrust structure section is probably sitting outside in Florida, waiting to be stacked. Altogether, those 23 rings could reach a height of more than 40m (130 ft), potentially more than is actually needed for a Starship tank section.
Last but not least, local photographer and spaceflight fan Jon Van Horne captured what looks like a new Starship tank dome in work at SpaceX’s prospective Kennedy Space Center (KSC) build site, known as Roberts Rd. Given that Starship Mk2 already has two domes installed and a third and final dome staged and ready for installation, this fourth dome is very likely the first for Starship Mk4.
In short, SpaceX’s Florida team is probably weeks ahead of Boca Chica in the process of building a second full-scale Starship prototype. Of course, the ultimate winner of this mock competition isn’t Florida or Texas, it’s SpaceX’s Starship program as a whole.
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Investor's Corner
Tesla gets its best analysis from Morgan Stanley as ‘it’s all about to change’
He maintained its ‘Overweight’ rating and the $410 price target Morgan Stanley had on the stock.
Tesla has gotten perhaps its best analysis from Morgan Stanley in quite some time, as the Wall Street firm claims that “it’s all about to change.”
That phrase could be used for both the company’s status and the world in general.
Analyst Adam Jonas said in a new note on Thursday to investors that Tesla could be one of the major winners in terms of the global transition from what it is now to what it will be.
He describes the global shift that will occur over the next few years:
“Have you interacted with a robot today? Have you even seen a robot today? No? Well, take a mental picture because it’s all about to change. When we meet someone who has never been in a Waymo or a Tesla Cybercab (which is most people), we frequently see a wince and a response such as ‘I’m not sure I’d feel comfortable getting in a car without a driver.’ We imagine going back in time to 1903 and asking people if they’d feel comfortable in an airplane.'”
The same technological revolutions that have occurred over the past 150 years will continue to occur again and again. We are on the verge of another, Jonas believes, as companies like Tesla are working on artificial intelligence tech, which includes changing the way we look at things like transportation and labor.
Jonas includes an interesting tidbit in his note about how humanoid robots could change wages, and how it could work into the advantage of Tesla, especially as it is developing its own Optimus robot:
“We estimate 1 humanoid robot at $5/hour can do the work of 2 humans at $25/hour, generating an NPV of approximately $200k/humanoid. 1 robot shaped car can potentially drive down cost/mile of a ride share vehicle to <$0.20 mile (1/10th human-driven ride-share).”
Jonas sees Tesla as a key player in how AI will impact things like manufacturing and various automotive industries, and he believes there is long-term potential for AI, robomobility, and even autonomous eVTOL platforms.
Tesla stock: Morgan Stanley says eVTOL is calling Elon Musk for new chapter
He maintained its ‘Overweight’ rating and the $410 price target Morgan Stanley had on the stock.
Elon Musk
Tesla expands Robotaxi program in Austin to new riders
Tesla has been expanding both the rider group and the geofence in Austin slowly, making sure to prioritize safety and avoid any major events with the early rollout.
Tesla is expanding its Robotaxi program in Austin, Texas, as several people have received invitations to participate and take rides.
Tesla first launched the Robotaxi platform on June 22. It invited a handful of people to participate in the first-ever public rides. We were lucky enough to get an invitation, and our permissions have been expanded in the Bay Area pilot program as well.
The group was small and consisted of big names in the Tesla community. It expanded and is continuing to offer these exclusive invitations to notable members of the Tesla community.
There have been fewer than five subsequent invitations after the first group’s were sent in late June:
I’m so stoked!! LFG 🙌🏽🙌🏽 @Tesla @Tesla_AI @robotaxi @elonmusk pic.twitter.com/F4chRhMjc9
— Arash (@MinimalDuck) August 7, 2025
I finally got it, guys!! 💯🙌 @robotaxi early access invite 🤠
Wait, does it mean I have to be 65 or wait another 65 years? 😎 pic.twitter.com/yAVPHXISY6
— JeebsTX 🇺🇸 (@JeebsTX) August 7, 2025
Tesla has been expanding both the rider group and the geofence in Austin slowly, making sure to prioritize safety and avoid any major events with the early rollout.
Tesla’s new Robotaxi geofence shape is an FU by Elon Musk to the competition
“We are being very cautious. We do not want to take any chances, so we are going to go cautiously. But the service areas and the number of vehicles in operation will increase at a hyper-exponential rate,” CEO Elon Musk said during the Q2 Earnings Call.
Eventually, the Robotaxi platform will not require an invite, and it will operate without geofences. Musk believes Tesla can get there within three or six months, and plans to have at least half of the U.S. population with access to a Robotaxi by the end of the year:
🚨Tesla plans to offer driverless Robotaxi rides to half the U.S. population by the end of the year, Musk says https://t.co/xEDoTF6fIt
— TESLARATI (@Teslarati) July 23, 2025
“I think we will probably have autonomous ride-hailing in probably half the population of the U.S. by the end of the year. That’s at least our goal, subject to regulatory approvals. I think we will technically be able to do it. Assuming we have regulatory approvals, it’s probably addressing half the population of the U.S. by the end of the year.”
Tesla plans to have regulatory approval in Nevada, Arizona, and Florida sooner than in other states.
Elon Musk
Tesla makes major change at Supercharger Diner amid epic demand
To ensure that menu items are both available in plentiful quantities and fresh, the menu could feature some seasonal options moving forward.
Tesla has made a major change at its Supercharger Diner in Los Angeles as the location is experiencing epic amounts of demand after launch.
The Supercharger Diner was an idea of CEO Elon Musk’s way back in 2018. It took some time to come to fruition, but it has finally opened, serving its first customers in July.
Tesla Supercharger Diner officially opens: menu, prices, features, and more
Upon its launch, people lined up around the block to give the restaurant a try. There were some who admitted to waiting 13 hours for the doors to open, which finally did at 4:20 p.m. local time.
If you know anything about Tesla, you know that the time fits the bill for the company.
Tesla Cybertruck leftovers are the main course at the Supercharger Diner
Nevertheless, it has basically been a non-stop operation since its grand opening. It’s already available to serve customers 24 hours a day and 7 days a week. These hours, along with the long-awaited grand opening, have brought tens of thousands of customers in the first few weeks.
As a result, the Diner’s chef, Eric Greenspan, revealed there will be some things that will no longer be on the menu as it handles “unprecedented demand.”
He told Eater the menu would be “forever evolving.” It has, as a result, now been void of the following menu items:
- Market Salad
- Club Sandwich
- Hashbrown Bites
- Biscuits and Red Gravy
- Chocolate Chip Cookies
- Vegan Patty option for Burger
- Waffles are now only served in the morning, instead of all day
- Soft serve will return this week. It’s provided by a local farm, which couldn’t handle the demand
- Reimagined fountain drinks
Tesla focused on sourcing a vast majority of the food from local sources. This is likely why it has been forced to scale back much of its menu for the time being. When restaurants source their food and beverages locally, their menus change frequently.
To ensure that menu items are both available in plentiful quantities and fresh, the menu could feature some seasonal options moving forward.
Tesla gets its best analysis from Morgan Stanley as ‘it’s all about to change’
Tesla expands Robotaxi program in Austin to new riders
Tesla makes major change at Supercharger Diner amid epic demand
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