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SpaceX CEO Elon Musk posts uncut Raptor, drone videos of Starhopper’s flight test debut
Some two hours after Starhopper’s inaugural untethered flight, SpaceX CEO Elon Musk took to Twitter to post an uncut video showing the ungainly rocket’s launch and landing from the perspective of both a drone and Starhopper’s lone Raptor engine.
As noted by commenters, Starhopper’s first flight also marks perhaps an even more fascinating milestone: it’s technically the first launch ever of a full-flow staged-combustion (FFSC) rocket engine. Whether or not the development hell Raptor required is or was worth it to SpaceX, the company has become the first and only entity on Earth to develop and fly a FFSC engine, beating out the national space agencies of both the United States and Soviet Union, both of which built – but never flew – prototypes.
Instead of inexplicably shelving a mature prototype development and test program, SpaceX iterated through several subscale Raptor prototypes, test-fired the engines for more than 1200 seconds total, used that data to design and build full-scale Raptors, and finally sped into a hardware-rich test campaign with six (soon to be seven) new engines. After SpaceX settled on a full-flow staged-combustion cycle and methane/oxygen (methalox) propellant, Raptor conducted its first full-scale tests all the way back in 2014, performing preburner flow and ignition tests at NASA’s Stennis Space Center.
Two years and many additional subcomponent tests later, SpaceX successfully performed the inaugural static fire test of its first completed subscale Raptor, a huge milestone for any rocket engine. In the 12 months following its first static fire (September 2016), SpaceX performed dozens of static fire tests with several subscale engines, putting the new propulsion system through >1200 seconds of combined testing.
A year after that, SpaceX was still testing subscale engines but the first full-scale Raptor engine was just a few months away from completing assembly in Hawthorne and heading to McGregor to kick off full-scale static fire testing. Indeed, four months after CEO Elon Musk’s September 2018 update, Raptor serial number 01 (SN01) shipped to Texas in late January and successfully ignited for the first time on February 3rd. SpaceX’s finalized full-scale Raptor engine is designed to produce more than 2000 kN (450,000 lbf, 200 tons) of thrust at full-throttle.
Since that inaugural ignition, SpaceX’s propulsion team – perhaps to their detriment, under orders from Musk – pushed SN01 and several of its successors to their limits as quickly as possible, resulting in severe, irreparable damage in several cases. On the other hand, the no-holds-barred, ‘hardware-rich’ (i.e. destructive) test program has allowed SpaceX to relatively quickly solve several major bugs that prevented the engine from passing longer test fires.
Raptor SN05 was originally expected to support Starhopper’s first flight(s) but had to be passed up after suffering damage in one of its final June 2019 acceptance tests. Raptor SN06 became the first engine – likely thanks to tweaks afforded by data gathered from its failed brethren – to pass all of those acceptance tests, leading to its eventual installation on Starhopper in early July.
Raptor’s impressive development culminated on July 25th with the engine’s first untethered flight while attached to Starhopper, a 9m-diameter (30 ft) low-fidelity prototype that is more or less a mobile test stand for the next-generation SpaceX engine. Raptor is now the only FFSC engine in history that has powered a flight-capable vehicle’s launch and landing, even if said flight featured an apogee of just 20-30 meters (65-100 ft).
“In full-flow staged combustion (FFSC), even more complexity is added as all propellant that touches the engine must necessarily end up traveling through the main combustion chamber to eke every last ounce of thrust out of the finite propellant a rocket lifts off with. As such, FFSC engines can be about as efficient as the laws of physics allow any given chemical rocket engine to be, at the cost of exceptional complexity and brutally difficult development.“
SpaceX delays Starhopper’s first flight a few days despite Raptor preburner test success
For more on what exactly makes full-flow staged-combustion engines uniquely capable and challenging to develop, the subject has been covered at length in past Teslarati articles.
According to Musk, the next major challenge facing Starhopper and (presumably) Raptor SN06 is far more ambitious 200-meter (650 ft) hop and flight test that could happen as soon as the first half of August.
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Elon Musk
Tesla looks to expand Robotaxi geofence once again with testing in new area
It looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.
Tesla looks to be preparing for the potential expansion of the Robotaxi geofence once again, as the company was spotted testing the suite in an area well outside of the Austin service area.
After it first launched the Robotaxi platform on June 22, Tesla has managed to expand its geofence twice, essentially doubling the travel area both times.
The most recent expansion took the size of the geofence from 42 square miles to about 80 square miles, bringing new neighborhoods and regions of the city into the realm of where the driverless vehicles could take passengers.
However, it looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.
Over the weekend, one fan noticed a Robotaxi validation vehicle testing in Bee Cave, Texas, which is roughly 25 minutes from the edge of the current geofence:
Tesla spotted doing Robotaxi validation testing in Bee Cave, Texas, about 15 miles west of Austin (20-25 minute drive from current edge of geofence). pic.twitter.com/JCOcoys8SJ
— Sawyer Merritt (@SawyerMerritt) August 23, 2025
Tesla has been testing vehicles in the western suburbs of Austin for some time, and it seems the company is laying some groundwork to push its geofence expansion into Plaid Mode as competition with Waymo continues to be at the forefront of the conversation.
Waymo has been expanding with Tesla for some time, as the pace of expansion for the two companies has been relatively accelerated for the past couple of months.
Tesla’s expansions of the geofence sent a clear message to competitors and doubters, but it is still aiming to keep things safe and not push the envelope too quickly.
The geofence expansion is impressive, but Tesla is also focusing on expanding its vehicle fleet in both Austin and the Bay Area, where it launched a ride-hailing service in July.
Tesla Bay Area autonomous fleet to grow to over 100 units: Elon Musk
Still, safety is the priority at the current time.
“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.
News
Tesla considers making a big move with Model Y pricing as demand is skyrocketing
“Trending toward a need to expedite output even further, which could mean adjusting pricing upward in the coming days. Trying hard not to, will see.”
Tesla is considering making a big move with Model Y pricing as demand is skyrocketing due to the EV tax credit expiring in just over a month.
With the $7,500 EV tax credit set to be removed on September 30, Tesla is experiencing increased demand for its Model 3 and Model Y. Customers are doing whatever they can to take delivery of the car they ordered as soon as possible.
The IRS recently adjusted the EV tax credit’s rules slightly.
Previously, the vehicle had to be delivered by September 30, but a slight tweak the agency made last week will now allow customers to enter a legally binding contract along with a marginal down payment by that date. The delivery can occur after September 30, and the car can still qualify for the credit.
However, demand is getting so crazy for the Model Y that Tesla is considering a price increase on the all-electric crossover, as well as a potential boost in production output to keep up with orders.
Inventory is dwindling in several markets across the United States, a good sign for the company, as it could have one of its best quarters in recent history in terms of deliveries.
However, Tesla is thinking of bumping the price slightly, Raj Jegannathan, the company’s VP of IT, AI Infrastructure, Apps, Infosec, and Vehicle Service Operations, said on X:
Trending toward a need to expedite output even further, which could mean adjusting pricing upward in the coming days. Trying hard not to, will see.
— Raj Jegannathan (@r_jegaa) August 25, 2025
The price adjustment would come as a response to increasing production output, Jegannathan’s response seems to indicate.
The bump would help Tesla’s margins, but the idea that the company could adjust pricing by increasing it would not be popular with potential car buyers. It might encourage some buyers to put their orders in sooner, hoping to avoid a new, higher price.
However, it could also steer some buyers away from putting an order in on a vehicle, especially if the price increase is more than a few hundred dollars.
Tesla boosted the price of the Model S, Model X, and Cybertruck recently, but brought in a “Luxe Package” to help justify it.
It comes with Free Full Self-Driving, Free lifetime Supercharging, four years of premium service, and lifetime Premium Connectivity.
Tesla has produced its 100,000th new Model Y at Gigafactory Berlin. The milestone was announced by the electric vehicle maker through its official Tesla Manufacturing account on social media platform X.
New Tesla Model Y milestone
The milestone was announced by Tesla on X, when the company wrote “Today, we built the 100,000th New Model Y at Giga Berlin!” The announcement was accompanied by an image of a new Model Y coming off the line.
The milestone was received warmly by members of the Tesla community, many of whom expressed excitement at the further progress of the new Model Y program at Giga Berlin. The facility, after all, only produces Model Y units, which would make it the perfect site to produce new variants like the Model Y Performance and possibly even the Model Y L, which was recently launched in China.
New Model Y ramp
As noted in a previous report from electrive, the initial production of the new Model Y started in Giga Berlin around mid-January 2025. Since the new Model Y involved a changeover from the legacy Y to the new variant, the ramp of the new Model Y’s production at the Germany-based facility was likely a gradual process over the past months.
It would then be no surprise if the next 100,000 new Model Y units would be produced in Giga Berlin in a shorter period. Giga Berlin could become an even bigger factor in Tesla’s global sales, after all, especially if it becomes the site that produces the Model Y Performance and the Model Y L for Europe and other territories. Giga Berlin, if any, seems to be quite busy recently, with aerial videos of the facility showing a fleet of mysteriously covered Model Y units being stored within the complex.
Tesla looks to expand Robotaxi geofence once again with testing in new area
Tesla considers making a big move with Model Y pricing as demand is skyrocketing
Tesla produces 100,000th new Model Y in Giga Berlin
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