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SpaceX’s Starship prototype is looking increasingly rocket-like as hop test pad expands
As SpaceX’s South Texas operations continue full steam ahead in pursuit of the first integrated hop tests of a full-scale Starship prototype, the company’s Starhopper and its complementary launch/hop pad are dramatically and visibly evolving on a daily basis.
This week’s progress has been signified by the installation of familiar rocket hardware on the Ship and a burst of construction – centered around pipelaying, plumbing, foundation work, and berm-building – at its pad. Just a few hundred miles north of Boca Chica, SpaceX’s team of propulsion engineers and technicians reached their own dramatic milestone, conducting the first static fire of a finalized version of the Raptor engine set to power Starship and Super Heavy (formerly BFR).
2-4-2019#SpaceX #TheFuture pic.twitter.com/0YBxk5QXD3
— Austin Barnard🚀 (@austinbarnard45) February 5, 2019
A pad fit for a Starhopper
In the last ~10 days alone (Jan 24-Feb 4), SpaceX pad construction workers and contractors transformed the former dirt mound from a generally flat, planed surface with a spattering of shipping containers and building materials into a hive of welding rigs, propellant and water tanks, major plumbing progress, shaped earth, and the beginnings of new concrete foundations. Thanks to local student Austin Barnard’s reliable drone photography, that pad-specific progress can be more properly visualized.
Taken on January 24th and February 4th respectively, the devil is definitely in the details when it comes to SpaceX’s prospective Starhopper pad development. Most notable is the progress made with the rapidly developing propellant plant and ground systems infrastructure in the left half of the images, marked by hundreds of feet of freshly-installed piping meant to support the process of fueling Starhopper with liquid methane and oxygen. For a rocket as powerful as Starhopper (even with just three Raptor engines), cooling both the propellant and the concrete launch and landing pad is no less important, visible in the shape of three large water tanks (lefthand foreground) and a smaller radiator stack (just to the right of two taller, skinnier white tanks.
Aside from the rapid rise of the first BFR propellant farm and its supporting equipment, SpaceX has progressed into the installation of a trio of concrete foundations just to the right of the dirt berm and propellant tank area. Standing as close as it is to said propellant tanks, it seems unlikely that the new foundation-laying is related to the pad (or a stand) meant to support early Starhopper hop tests, although SpaceX’s Falcon 9-era Grasshopper and F9R hop test vehicles operated about the same distance from its propellant infrastructure. SpaceX’s South Texas site also features a sort of satellite pad at its east end (the right side in attached photos) that could have a future as an integration hangar or a secondary landing zone to allow for Starhopper to perform divert tests.
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- Rockets are perhaps even more capital intensive. (SpaceX)
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- BFR’s booster is at least three times more powerful still than BFS at liftoff. (SpaceX)
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- BFR (2018) breaks through a cloud layer shortly after launch. (SpaceX)
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- (SpaceX)
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- BFR’s booster, now known as Super Heavy. (SpaceX)
Depending on whether SpaceX actually intends to develop the land shown above into an actual full-scale launch facility for BFR (Super Heavy and Starship), it could also remain generally unchanged until Starhopper’s hop test program has been run to completion, at which point everything seen above would likely be rebuilt from scratch to accommodate for any drastic changes in function. SpaceX’s Boca Chica might simply be too small to support a pad capable of launching Super Heavy (nearly twice as powerful as Saturn V at full thrust), measuring in at considerably less than ~10 acres of usable area compared to LC-40’s ~20 acres and Pad 39A’s ~50+ acres. CEO Elon Musk has also hinted at using a giant floating platform for early orbital BFR launches, although that might prove even harder (and more costly) than building a traditional land-based pad.
Becoming a rocket
Meanwhile, the aft engine/fin/tank section of SpaceX’s Starship prototype (unofficially nicknamed Starhopper) has experienced a stream of hardware additions and improvements, modifying its relatively awkward and unfinished steel base with what appear to be Falcon 9-sized quick-disconnect umbilical panels, a functional propellant tank header, and mounting hardware for carbon-overwrapped pressure vessels (COPVs). By using hardware that is proven and easy to manufacture, SpaceX can save a huge amount of time that would otherwise need to be spent engineering subassemblies that (at risk of undervaluing the challenge) are generally known-quantities – more a matter of time and effort than an actual technical hurdle.
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- B1048’s second umbilical panel (blue for oxygen). (Pauline Acalin)
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- Falcon 9 B1048 displays one of two umbilical panels (red for kerosene) after its first launch. (Pauline Acalin)
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- Starhopper’s partially completed umbilical panel as of Feb. 4th. (NASASpaceflight – bocachicagal)
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- A SpaceX technician or contractor is pictured here cutting out sections of Starhopper’s steel hull to route umbilical panel piping. (NASASpaceflight – bocachicagal, 02/03/19)
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- Starhopper also had a tank header installed on February 5th, complete with pressure regulation and propellant feeding hardware. (NASASpaceflight – bocachicagal)
While they are clearly still in a rough, unfinished form, Starhopper’s umbilical panels are already easy to recognize when compared alongside Falcon 9’s iconic red and blue panel pairs. In essence, whereas Starhopper has been a largely unknown quantity with no familiar aspects since it began to come together late last year, the Starship prototype has recently had hardware installed that is finally revealing subtle SpaceX signatures in its design and assembly.
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Although the two vehicles are built for completely different use cases, Tesla utilized engineering expertise while developing both the Cybercab and Semi to build a thermal architecture that would fit both vehicles. Of course, with some slight revisions.
The development was noted by Lars Moravy and Dan Priestley last week at Tesla’s Semi Handover event in Sparks, Nevada, where the company showed off its dedicated production facility for the Class 8 truck.
🚨 Tesla designed the integrated thermal systems for Cybercab and Semi at the same time as the vehicles were both in development
Tesla wanted to build one thermal system that worked with both vehicles, apart from small modifications.
Semi and Cybercab share parts 🤯 pic.twitter.com/KmzSsUbrcg
— TESLARATI (@Teslarati) September 25, 2026
Tesla’s decision to develop one thermal architecture for both the Cybercab and Semi is one of the more revealing engineering choices in the company’s 2026 lineup:
“We designed it at the same time we designed the Cybercab and we said okay we’re going to take our most efficient vehicle and our biggest vehicle and we’re going to take one thermal system and make it work for both.”
Core parts, meaning the compressor, pumps, and heat exchangers, are shared, with only modest changes to cooling-loop sizing and a larger radiator on the truck. The result, they said, is a compressor and thermal stack already proven across millions of miles, delivering “reliability from day one.”
Priestley also highlighted a practical payoff of the indirect design:
“There’s no AC lines, there’s no refrigerant lines…It comes from the factory fully charged, sealed with refrigerant, and it just exchanges coolant. It doesn’t actually run refrigerant up to the front of the vehicle.”
This eliminates potentially leak-prone plumbing that would otherwise require hands-on service, reducing overall uptime and potentially cutting into business margins. The megamanifold runs cabin HVAC and every powertrain heating and cooling loop at once, recapturing waste heat from motors and the battery instead of dumping it the way a diesel engine does.
The approach is just the latest chapter in a continuing story of stretching thermal solutions across wildly different vehicles. Model Y’s Octovalve evolved into the Super Manifold used on Cybertruck, and later Model S/X refreshes. Cybercab then introduced Supermanifold V3, which Tesla says is 80 percent automated to build and 38 percent more efficient than typical automotive thermal systems.
This thermal system is also shared with Cybercab – one thermal system for both our most efficient vehicle & our biggest vehicle
— Tesla Semi (@tesla_semi) September 25, 2026
Tesla has done the same with the 4680 cells, both being utilized in the Cybertruck and Semi, and with heat-pump compressors that Priestley noted were already common across the passenger-car fleet.
Concurrent development of crucial vehicle elements buys scale and reliability that a truck-only thermal system could not match. High-volume passenger car parts are cheaper and more accessible, which can give fleets a sealed, low-maintenance loop of operation from their first day of operation.
For owners and operators, that translates into less energy spent on cabin heat in the colder months, fewer refrigerant-related repairs, and a thermal architecture already stress-tested at passenger-car volumes before the first high-volume Semi left the lines in Nevada.
Tesla CEO Elon Musk certainly tipped off some details of the Tesla Roadster event with a broadening of information regarding the company’s decision to delay the unveiling for two weeks.
For years, people have speculated about what the Roadster will be capable of. While there have been plenty of things said about what it *could* do, we have not seen or been told by Tesla what it will actually be capable of.
However, over the past few days, Tesla’s weather updates have truly pushed the speculation into Plaid Mode, basically all but confirming the car will have some sort of aerial capability — whether that would be hovering or fully flying remains to be seen — but it definitely seems that it will be able to leave the ground intentionally.
“Because this event can only be held outdoors…”
Tesla posted on Monday that it would delay the Roadster event until October 15, and it indicated that it had to do this because the event “can only be held outdoors.”
With the potential SpaceX collaboration to develop cold-gas thrusters that will help the vehicle go airborne, doing this indoors is probably not a safe, or even plausible, possibility.
Roadster event update
We’ve been tracking the weather closely with local meteorologists, but given the severe conditions predicted & because this event can only be held outdoors, we’ve made the difficult decision to reschedule.
New date is October 15. Additional details to…
— Tesla (@Tesla) September 28, 2026
FAA Airspace Restriction
The FAA gave Tesla a Temporary Flight Restriction (TFR) for 10,000 feet above ground level, much higher than the typical 2,000-foot restrictions that are usually placed at SpaceX’s McGregor, Texas site.
Tesla Roadster event requires restricted airspace, and the FAA obliges
Some have said that this massive increase is due to Tesla’s need to restrict unauthorized drone use for spying on the event.
Elon Admits High Winds
“Due to high winds, the new Roadster demo is postponed by 2 weeks,” Musk said in a post on X yesterday.
Due to high winds, the new Roadster demo is postponed by 2 weeks https://t.co/dV3ojDh1iT
— Elon Musk (@elonmusk) September 30, 2026
A reply reading, “What’s strong wind got to do with a car demo with four grounded wheels?” was directly below Musk’s post, satirically and sarcastically probing for more details.
All signs are pointing toward an aerial demonstration for the Roadster.
Tesla has secured $30 billion in fresh credit lines from Citibank and Wells Fargo in an effort to scale its biggest current projects.
Tesla agreed to a $20 billion three-year delayed-draw term loan facility from Citibank, it announced on Tuesday. Additionally, it signed a five-year, $8 billion revolving credit facility and a $2 billion, 364-day term credit facility with Wells Fargo.
In a filing with the Securities and Exchange Commission (SEC), that it “may draw” from the $20 billion delayed-draw term “from time to time” and “no more than ten times during the 18 months following the closing date.” This loan matures on September 29, 2029.
The five-year revolving facility from Wells Fargo will also be accessed by Tesla “from time to time,” and will become due and payable on September 29, 2031. Tesla can request two separate one-year extensions.
On the $2 billion, 364-day revolving loan, it becomes due and payable on September 28, 2027. Tesla can also increase its additional commitments to an additional $4 billion across the Revolving Facilities. This would increase the total facilities to $14 billion. Tesla said it does not plan to utilize any of these loans in 2026.
Tesla plans to utilize the money to help prop up its ambitions to scale its biggest products, each of which is either in early launch phases or still in development. Of course, we’re talking about Cybercab and Semi, which have launched, and Optimus, which is still under heavy development and working toward initial release.
All three Tesla products have one thing in common: they’ve all required Tesla to build new manufacturing lines for them.
For the Semi, Tesla built a brand new factory in Sparks, Nevada, adjacent to the Tesla Gigafactory. For Optimus, Tesla sunset Model S and X production at the Fremont Factory, which brought an end to the two flagship models, thus creating manufacturing space for the humanoid robot. Finally, Cybercab is being built at Gigafactory Texas and officially entered production earlier this year.
The cash will help Tesla bolster its finances for the continuing development of these products. Tesla said that it forecasts its CapEx to be over $25 billion, up from just over $8.5 billion last year. These loans surely help with that spending.
Tesla Cybercab and Semi have more in common than you might think
Elon Musk weather update tips Tesla Roadster speculation into Plaid Mode
