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SpaceX, NASA test escape zipline ahead of Crew Dragon’s astronaut launch debut

NASA astronauts Bob Behnken and Shannon Walker looked like characters from a scifi movie set during a September 18th pad escape drill. (SpaceX)

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As part of continued preparations ahead of SpaceX’s Demonstration-2 mission (DM-2) that will debut Crew Dragon’s ability to support astronaut flight, SpaceX and NASA have successfully tested crew emergency egress (escape) systems at SpaceX’s primary crew launch facilities located at Launch Complex 39-A (LC-39A) at Kennedy Space Center in Florida. The successful verification tests have proven that SpaceX is ready to support crewed launches and preserve human life with effective escape methods, including a zipline mounted basket system that will whisk astronauts away from Crew Dragon and Falcon 9 in the event of a launch pad anomaly.

The formal launch pad escape verification test comes just a month after SpaceX and NASA CCP teams practiced astronaut recovery rehearsals – including emergency astronaut evacuation – from a high-fidelity Crew Dragon mockup capsule aboard the recovery Vessel GO Searcher.

On August 13th and 15th, SpaceX and NASA teams completed several critical Crew Dragon-related rehearsals, practicing methods of safely extracting astronauts from the capsule and evacuating them to land-based medical facilities via helicopter. (NASA)

Multiple teams from NASA and SpaceX including personnel from the Astronaut Office at NASA’s Johnson Space Center in Houston, NASA Flight Surgeons, SpaceX systems engineers, Kennedy Aero Medical, and Commercial Crew Program Safety worked together to successfully complete two full-dress rehearsals of different escape methods.

In a Commercial Crew Program (CCP) blog post, NASA CCP launch operations integrator Steve Payne stated that “this demonstration allowed all the various teams responsible for ground operations, system design, ground safety and emergency management to observe and verify the system is ready for operational use.”

The launch pad escape methods practiced at LC-39A simulated evacuation plans that would usher flight and pad crew members to safety should any sort of life-threatening anomaly occur during launch proceedings. Two different versions of escape methods were practiced – a quick emergency evacuation utilizing the zipline system and a less life-threatening situation using an elevator.

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From left, NASA astronauts Shannon Walker and Bob Behnken participated in the exercise to verify the crew can safely and quickly evacuate from the launch pad in the unlikely event of an emergency before liftoff of SpaceX’s first crewed flight test, called Demo-2. (SpaceX/NASA)

Both escape plans require that crew members are able to evacuate the crew access arm and crew-loading level of the Fixed Service Structure (FSS) at LC-39A, located some 265ft in the air. During SpaceX renovations of LC-39A the crew loading platform was moved roughly half a level higher to accommodate the Crew Dragon capsule’s position atop a Falcon 9 booster, as the Crew Dragon stack is far different from and significantly taller than the Space Shuttles that previously flew from LC 39-A.

One exit method demonstrated how both flight and pad crew members could exit the launch pad under non-emergency circumstances. NASA astronauts Bob Behnken and Shannon Walker participated in the exercises and began the first rehearsal at the end of the crew access arm (CAA) – known as a white room – and took an elevator in the FSS to the ground before being escorted to a safe location nearby.

NASA astronauts Bob Behnken and Shannon Walker practice loading into a slidewire basket simulating an emergency escape to ground level during an exercise to verify evacuation from the launch pad in the unlikely event of an emergency before liftoff at Launch Complex 39A. (SpaceX/NASA)

The second rehearsal simulated an emergency (i.e. time-sensitive) egress with active escape alarms and fire suppression systems that required the astronauts and pad crew to escape the launch tower using slide-wire mounted – essentially a serious zipline – basket transport system. This method has been around for decades and during the SpaceX LC-39A renovations some much-needed upgrades were implemented, including a new braking system to control basket descent speed and modifications to allow easier exit from the baskets.

NASA astronauts Shannon Walker, in front, and Bob Behnken pass through the water deluge system on the 265-foot level of the crew access tower as they participate in escape verification exercises ahead of SpaceX’s first crewed flight test, called Demo-2. (SpaceX/NASA)

In the blog post, Behnken expressed excitement about the completion of the verification tests, as they bring him and his colleagues one step closer to launching to orbit aboard SpaceX’s Crew Dragon spacecraft. “It’s exciting to have this verification test behind us on our way to the SpaceX Demo-2 mission. Each time today when we headed down the crew access arm, I couldn’t help but think about what it will be like to strap into Dragon on launch day.”

Behnken’s words reflect the anticipation and excitement that is shared by all as we await the historic and triumphant return of human spaceflight from US soil when SpaceX’s Crew Dragon capsule carries astronauts to the International Space Station for the first time. SpaceX CEO, Elon Musk, recently stated that the Crew Dragon capsule (C204) and trunk that will support DM-2 and (hopefully) push SpaceX into a new era of human spaceflight is set to arrive in Florida as early as November 2019. The Falcon 9 booster (B1058) has already completed static fire testing in Texas and is likely already in Florida or set to arrive imminently.

If all goes as planned during Crew Dragon’s upcoming in-flight abort (IFA) test and NASA is able to efficiently complete its myriad of reviews and paperwork, SpaceX should be ready to launch its first astronauts into orbit early next year.

Check out Teslarati’s newsletters for prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket launch and recovery processes.

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Tesla’s Semi truck factory is open with a detail that changes everything

Tesla’s dedicated Nevada Semi factory has opened, targeting 50,000 trucks per year as fleet adoptions accelerate nationwide.

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Nearly nine years after Elon Musk unveiled the Tesla Semi in November 2017, the company is now opening a dedicated factory just outside of Reno, Nevada, and ramping toward mass production of 50,000 trucks per year.

Volume production began in March 2026 at the new Tesla Semi factory, with the competitive advantage not being the factory itself. Rather, it’s where Tesla built it. By constructing the 1.7 million square foot facility directly adjacent to Gigafactory Nevada in Sparks, Tesla closed the one supply chain loop that had delayed the Semi program for years. The 4680 battery cells that power the Semi are manufactured in the same complex, which significantly streamlines supply logistics. That single decision eliminates the bottleneck that forced Tesla to prioritize battery supply for passenger cars over the Semi throughout 2020, 2021, and 2022, which is precisely why the first deliveries slipped three years past the original target. Every other electric truck manufacturer sources its battery cells from a separate supplier, ships them to a separate factory, and absorbs the cost and delay that comes with that. Tesla built its Semi factory around its battery factory, and that vertical integration is what makes 50,000 trucks per year a realistic number rather than an aspirational one.

At the 2025 Annual Shareholder Meeting, Musk was direct about where things stood, stating “Starting next year, we will manufacture the Tesla Semi. We already have a lot of prototype Semis in operation – PepsiCo and other companies have been using them for some time. But in 2026, we’ll begin volume production at our Northern Nevada factory.” Full ramp to volume output is targeted before June 30, 2026.


The first limited deliveries happened in December 2022 to PepsiCo, which eventually doubled its fleet to 50 trucks out of its California distribution facility. Since then the Semi has been showing up in more corporate fleets. As Teslarati noted in March, a Ralph’s Supermarkets branded Semi was spotted on a Los Angeles highway, confirming Kroger’s partnership with Tesla to deploy up to 500 electric Semis. Walmart, Costco, Sysco, US Foods, DHL, Hight Logistics and WattEV are among the companies actively running or receiving units. DHL logged real-world efficiency of 1.72 kWh per mile under a full 75,000 pound load over 388 miles, matching Tesla’s targets closely.

The 2026 production model arrives with meaningful upgrades over the original, with a 1,000 pound weight reduction, updated aerodynamics, and support for 1.2 MW Megacharger speeds that can restore 60% of range in around 30 minutes during a mandatory driver rest break. Tesla opened its first public Megacharger in Ontario, California in March, positioned near the I-10 and I-15 interchange serving the Ports of Los Angeles and Long Beach. The company plans 37 Megacharger sites by end of 2026 and 66 total across 15 states by early 2027, with construction beginning at the nation’s largest truck stop operator in the first half of this year.

Tesla reveals various improvements to the Semi in new piece with Jay Leno

Musk has described the Semi’s economics as a straightforward case. “The Semi is a TCO no-brainer,” he said, noting the total cost of ownership is “much, much cheaper than any other transportation you could have.” At under $300,000, the truck costs roughly double a comparable diesel, but California’s $200,000 per vehicle subsidy has driven over 1,000 state orders alone. As Teslarati has tracked, the prototype fleet accumulated over 13.5 million miles with 95% fleet uptime before production ever scaled. The factory opening now turns that proof of concept into a production program.

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Tesla Full Self-Driving gets first-ever European approval

Tesla owners in the Netherlands with a Full Self-Driving subscription will receive a software update “shortly,” the company said, activating the operation of the company’s semi-autonomous driving tech for the first time in Europe.

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Credit: Tesla AI | X

Tesla Full Self-Driving (Supervised) got its first-ever European approval, as the Netherlands gave the suite the green light to begin operation.

Tesla owners in the Netherlands with a Full Self-Driving subscription will receive a software update “shortly,” the company said, activating the operation of the company’s semi-autonomous driving tech for the first time in Europe.

The Dutch vehicle authority RDW granted the type approval after more than 18 months of rigorous testing on both closed tracks and public roads. FSD Supervised complies with UN R-171 standards and benefits from Article 39 exemptions under EU Regulation 2018/858. Importantly, it is not a fully autonomous vehicle.

The RDW stressed that the driver remains fully responsible and must maintain attention at all times. “Safety is paramount for the RDW,” the authority stated. “Proper use of this driver assistance system contributes positively to road safety.” Sensors monitor driver alertness, issuing warnings if eyes leave the road or hands are unavailable to take control immediately.

CEO Elon Musk also commented on the approval in a post on X, saying:

“First (supervised) FSD approval in Europe! Congratulations to the Tesla team and thank you to the regulatory authorities in the Netherlands for all of the hard work required to make this happen.”

Trained on billions of kilometers of real-world driving data, FSD Supervised allows the vehicle to handle residential streets, dense city traffic, and highways under constant supervision. Tesla’s post declared:

“It can drive you almost anywhere under your supervision – from residential roads to city streets & highways. No other vehicle can do this.”

The company added that it is “excited to bring FSD Supervised to more European countries soon.”

This national approval paves the way for broader EU adoption. Other member states can recognize the Dutch certification individually, with a potential bloc-wide rollout via European Commission committee vote anticipated by this Summer. The decision underscores Europe’s stricter safety and documentation requirements compared to U.S. self-certification.

Tesla Europe shares FSD test video weeks ahead of launch target

The Netherlands’ approval represents a pivotal step for Tesla in Europe, where complex regulations and mixed traffic have delayed rollout. Musk added that the RDW was “rigorous” in its assessment of FSD.

By proving the system’s safety in one of the continent’s most bicycle- and tram-heavy nations, Tesla positions itself to transform mobility across the EU—delivering greater convenience while keeping drivers firmly in control.

As the first domino falls, anticipation builds for FSD Supervised to reach additional countries soon.

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Tesla is using a redesigned Cybertruck battery cell to mitigate Semi challenges

It is perhaps the most recent example of Tesla using unique engineering prowess and cross-pollinating vehicle elements to solve common problems, something it does better than most companies out there.

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Credit: Tesla

Tesla revealed that it is utilizing redesigned Cybertruck battery cells in its Long Range Semi to mitigate some pertinent challenges that come with long-haul logistics.

It is perhaps the most recent example of Tesla using unique engineering prowess and cross-pollinating vehicle elements to solve common problems, something it does better than most companies out there.

Tesla’s long-awaited Semi truck is entering production at its Nevada Gigafactory, and fresh factory footage reveals a clever evolution in its battery technology.

The Long Range variant, designed for up to 500 miles of real-world range, relies on a structural battery pack that uses the same 4680-form-factor cells found in the Cybertruck.

However, Tesla engineers have completely redesigned the pack’s architecture—shifting from the flat, pancake-style modules typical in passenger vehicles to a compact, vertical cubic layout. This change isn’t just about cramming more energy into the chassis; it’s a targeted solution to one of electric trucking’s biggest headaches: range loss in cold climates.

Dan Priestley, Head of the Tesla Semi program, said:

“We’re using essentially the same cell out of Cybertruck, but our cars packs are more like a pancake. Whereas these are more like a cube. You get a lot of energy stored in a small space. You can only do this if you design the vehicle to be electric from the ground up.”

In conventional EVs, battery packs are laid out horizontally in wide, flat arrays to fit under the floor. While this works for cars and even the Cybertruck’s structural pack, it exposes a large surface area to the elements.

Heat escapes quickly, especially overnight when the truck is parked. Cold temperatures slow chemical reactions inside lithium-ion cells, reducing available energy and forcing the vehicle to expend extra power warming the battery and cabin.

Real-world tests on vehicles like the Cybertruck show winter range losses of 20-40 percent, depending on conditions. For long-haul truck drivers operating in Canada, Scandinavia, or the northern U.S., this “silent killer” means unplanned stops, reduced payloads, and higher operating costs.

From personal experience, cold weather still impacts EV batteries even with various inventions and strategies that companies have come up with. In the cold Pennsylvania winter, charging was much more frequent for me due to range loss due to temperatures.

Tesla’s cubic battery pack flips the script. By arranging the 4680 cells in tall, dense vertical stacks, the pack minimizes external surface area relative to its volume—essentially turning the battery into its own thermal blanket.

Factory video from the Semi assembly line shows these large, yellow-green structural modules mounted directly onto the chassis, forming a near-cube shape.

The reduced exposure helps the pack retain heat generated during operation, keeping cells closer to their optimal temperature even after hours in sub-zero conditions.

The design doesn’t stop there. Tesla pairs the cubic pack with an advanced heat pump system that actively recycles thermal energy from the motors, brakes, and even ambient air.

Tesla reveals various improvements to the Semi in new piece with Jay Leno

Unlike passive systems in earlier EVs, this architecture transfers waste heat back into the battery, maintaining readiness for morning departures without draining the pack.

Executives have noted that the combination, cubic geometry plus intelligent thermal management, dramatically cuts overnight cooldown and range degradation, making the Semi viable for 24/7 fleet operations in harsh winters.

Beyond cold-weather performance, the redesigned pack integrates structurally with the truck’s frame, enhancing rigidity while simplifying assembly. Production footage shows workers installing the massive modules early in the line, signaling that the Semi’s battery is now a core chassis component rather than an add-on.

Using proven 4680 cells keeps costs down and leverages Tesla’s scaled manufacturing know-how from Cybertruck and Model Y lines.

Tesla’s focus on ramping up Semi output will lean on small innovative steps like this one. Truckers are not immune to traveling in cold weather conditions, and changes like this one will help make them more effective while also increasing output by logistics operators who choose to go all-electric with the Tesla Semi.

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