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SpaceX's next Starship rapidly coming together as Elon Musk shares latest progress
SpaceX CEO Elon Musk has shown off a rarely-seen phase of Starship construction, further confirming that the next full-scale rocket ship is rapidly coming together after operator error destroyed its predecessor on April 3rd.
Around 5 am local time (10:00 UTC) on April 5th, Musk shared a photo of a smaller secondary tank’s installation inside Starship SN4’s full-size liquid methane tank. The photo is the first time SpaceX or its CEO has offered a glimpse inside this lesser-known part of Starship production and assembly and simultaneously offers insight into a design that’s been a mystery for months. Over the last few weeks, local residents-turned-unofficial-SpaceX-photographers have captured several photos of an internal Starship header tank design far removed from the nosecone tank Musk has previously discussed.
Those header tanks are a necessity to enable Starship’s ability to quickly, reliably, and safely reignite its Raptor engines for recovery and landing-related burns. For a ship like Starship SN4, those header tanks are a sign that SpaceX may want to use the ship to perform Starship’s most crucial test short of orbit — a ~20 km (12.5 mi) flight test meant to demonstrate a skydiver-style landing maneuver. While that skydiver landing test remains several consecutive milestones distant, Musk’s April 5th photo confirms that Starship SN4 is making significant progress towards final assembly.
Known as header tanks, SpaceX’s large Starship launch vehicle upper stage and orbital spacecraft requires smaller, secondary tanks aside from the main liquid oxygen and methane propellant tanks that make up the bulk of its body. In these early stages of prototype development, those tanks serve one main purpose: reserve a small portion of pressurized propellant for Starship landing burns.
While Starship’s main tanks still need to be pressurized at all times to ensure the rocket’s structural integrity, smaller header tanks make it much easier to safely feed Raptor engines fuel during even the most chaotic of aerial maneuvers. For rocket engines, even the slightest introduction of pressurization gas or voids into the combustion process can lead to immediate destruction — a bit like how a tiny air bubble can be almost instantly fatal for humans. Starship header tanks thus ensure that only a fraction of the overall tank volume is in play during the ship’s most critical maneuvers.
Requiring both a fuel and oxidizer, Starships thus need two header tanks. Currently, Starship’s design places the liquid methane header tank directly inside the main methane tank itself. The liquid oxygen header tank, however, is situated in the very tip of Starship’s nose section, a location chosen to optimize the vehicle’s center of gravity for stability during a radical skydiver-style landing maneuver.
Musk’s April 5th photo and caption revealed that SpaceX began installing Starship SN4’s methane header tank just an hour or two after it had flipped the ship’s partially-completed liquid methane tank dome. Thanks to SpaceX’s more efficient use of a common dome design in their Falcon and Starship rockets, that dome also serves as the upper dome of the ship’s larger liquid oxygen tank. After the methane header tank is installed, a funnel-like sump will be the last addition needed to finish the section.
With the majority of Starship SN4 already in work around SpaceX’s Boca Chica, Texas rocket factory, the ship could be just a week or less away from kicking off the stacking phase of assembly. Stay tuned!
Tesla has added the 15th automaker to the growing list of companies whose EVs can utilize the Supercharger Network this year, as BMW is the latest company to gain access to the largest charging infrastructure in the world.
BMW became the 15th company in 2025 to gain Tesla Supercharger access, after the company confirmed to its EV owners that they could use any of the more than 25,000 Supercharging stalls in North America.
Welcome @BMW owners.
Download the Tesla app to charge → https://t.co/vnu0NHA7Ab
— Tesla Charging (@TeslaCharging) December 10, 2025
Newer BMW all-electric cars, like the i4, i5, i7, and iX, are able to utilize Tesla’s V3 and V4 Superchargers. These are the exact model years, via the BMW Blog:
- i4: 2022-2026 model years
- i5: 2024-2025 model years
- 2026 i5 (eDrive40 and xDrive40) after software update in Spring 2026
- i7: 2023-2026 model years
- iX: 2022-2025 model years
- 2026 iX (all versions) after software update in Spring 2026
With the expansion of the companies that gained access in 2025 to the Tesla Supercharger Network, a vast majority of non-Tesla EVs are able to use the charging stalls to gain range in their cars.
So far in 2025, Tesla has enabled Supercharger access to:
- Audi
- BMW
- Genesis
- Honda
- Hyundai
- Jaguar Land Rover
- Kia
- Lucid
- Mercedes-Benz
- Nissan
- Polestar
- Subaru
- Toyota
- Volkswagen
- Volvo
Drivers with BMW EVs who wish to charge at Tesla Superchargers must use an NACS-to-CCS1 adapter. In Q2 2026, BMW plans to release its official adapter, but there are third-party options available in the meantime.
They will also have to use the Tesla App to enable Supercharging access to determine rates and availability. It is a relatively seamless process.
News
Tesla adds new feature that will be great for crowded parking situations
This is the most recent iteration of the app and was priming owners for the slowly-released Holiday Update.
Tesla has added a new feature that will be great for crowded parking lots, congested parking garages, or other confusing times when you cannot seem to pinpoint where your car went.
Tesla has added a new Vehicle Locator feature to the Tesla App with App Update v4.51.5.
This is the most recent iteration of the app and was priming owners for the slowly-released Holiday Update.
While there are several new features, which we will reveal later in this article, perhaps one of the coolest is that of the Vehicle Locator, which will now point you in the direction of your car using a directional arrow on the home screen. This is similar to what Apple uses to find devices:
Interesting. The location arrow in the Tesla app now points to your car when you’re nearby. pic.twitter.com/b0yjmwwzxN
— Whole Mars Catalog (@wholemars) December 7, 2025
In real time, the arrow gives an accurate depiction of which direction you should walk in to find your car. This seems extremely helpful in large parking lots or unfamiliar shopping centers.
Getting to your car after a sporting event is an event all in itself; this feature will undoubtedly help with it:
The nice little touch that Tesla have put in the app – continuous tracking of your vehicle location relative to you.
There’s people reporting dizziness testing this.
To those I say… try spinning your phone instead. 😉 pic.twitter.com/BAYmJ3mzzD
— Some UK Tesla Guy (UnSupervised…) (@SomeUKTeslaGuy) December 8, 2025
Tesla’s previous app versions revealed the address at which you could locate your car, which was great if you parked on the street in a city setting. It was also possible to use the map within the app to locate your car.
However, this new feature gives a more definitive location for your car and helps with the navigation to it, instead of potentially walking randomly.
It also reveals the distance you are from your car, which is a big plus.
Along with this new addition, Tesla added Photobooth features, Dog Mode Live Activity, Custom Wraps and Tints for Colorizer, and Dashcam Clip details.
🚨 Tesla App v4.51.5 looks to be preparing for the Holiday Update pic.twitter.com/ztts8poV82
— TESLARATI (@Teslarati) December 8, 2025
All in all, this App update was pretty robust.
Tesla CEO Elon Musk shaded Waymo in a post on X on Wednesday, stating the company “never really had a chance” and that it “will be obvious in hindsight.”
Tesla and Waymo are the two primary contributors to the self-driving efforts in the United States, with both operating driverless ride-hailing services in the country. Tesla does have a Safety Monitor present in its vehicles in Austin, Texas, and someone in the driver’s seat in its Bay Area operation.
Musk says the Austin operation will be completely void of any Safety Monitors by the end of the year.
🚨 Tesla vs. Waymo Geofence in Austin https://t.co/A6ffPtp5xv pic.twitter.com/mrnL0YNSn4
— TESLARATI (@Teslarati) December 10, 2025
With the two companies being the main members of the driverless movement in the U.S., there is certainly a rivalry. The two have sparred back and forth with their geofences, or service areas, in both Austin and the Bay Area.
While that is a metric for comparison now, ultimately, it will not matter in the coming years, as the two companies will likely operate in a similar fashion.
Waymo has geared its business toward larger cities, and Tesla has said that its self-driving efforts will expand to every single one of its vehicles in any location globally. This is where the true difference between the two lies, along with the fact that Tesla uses its own vehicles, while Waymo has several models in its lineup from different manufacturers.
The two also have different ideas on how to solve self-driving, as Tesla uses a vision-only approach. Waymo relies on several things, including LiDAR, which Musk once called “a fool’s errand.”
This is where Tesla sets itself apart from the competition, and Musk highlighted the company’s position against Waymo.
Jeff Dean, the Chief Scientist for Google DeepMind, said on X:
“I don’t think Tesla has anywhere near the volume of rider-only autonomous miles that Waymo has (96M for Waymo, as of today). The safety data is quite compelling for Waymo, as well.”
Musk replied:
“Waymo never really had a chance against Tesla. This will be obvious in hindsight.”
Waymo never really had a chance against Tesla. This will be obvious in hindsight.
— Elon Musk (@elonmusk) December 10, 2025
Tesla stands to have a much larger fleet of vehicles in the coming years if it chooses to activate Robotaxi services with all passenger vehicles. A simple Over-the-Air update will activate this capability, while Waymo would likely be confined to the vehicles it commissions as Robotaxis.
Tesla adds 15th automaker to Supercharger access in 2025
Tesla adds new feature that will be great for crowded parking situations
