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Tesla Semi spotted in Supercharger between mysterious Lathrop facility and Fremont factory

The Tesla at the Dublin Supercharger. (Photo: John Grinley)

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Tesla’s eye-catching red Semi prototype was recently sighted paying a visit to a Supercharger located between the company’s mysterious Lathrop facility and its main factory in Fremont, CA. Similar to other sightings of the vehicle, the all-electric truck seemed to have attracted attention from Tesla enthusiasts in the area.

Tesla enthusiast John Grinley was staying at a hotel in Dublin, CA this past Saturday when he decided to stop by a nearby Tesla store so he could test drive a Model 3. While spending some time at the location, the aspiring Model 3 owner was asked by the staff if he would like to stay a little longer to see the Tesla Semi in person. Not wanting to miss the opportunity, Grinley opted to wait.

Just as hinted at by the store’s staff, the Tesla Semi did arrive at the Dublin Store, parking itself at a Supercharger. Grinley, together with around 10-15 people who were at the store for test drives, were treated to a rare, up-close look at the all-electric long hauler. The enthusiast was able to capture a couple of photos, as well as a video of the vehicle parking at a charging spot.

The Tesla at the Dublin Supercharger. (Photo: John Grinley)

Tesla has stated it would be using the Semi for its own operations, and if sightings of the vehicle are any indication, this does appear to be the case. This is one of the reasons why several Semi sightings have been in areas that are close to or en route to a key Tesla location. Dublin, for example, lies between Tesla’s Fremont, CA factory and the electric car maker’s massive, mysterious Lathrop facility, which is currently under construction.

Tesla has been incredibly secretive about the nature of the Lathrop site, though speculations have suggested that the location could be utilized either as a parts distribution center, or even a site for the production of the Semi. Recent photos taken inside the massive facility, for one, show some remarkable similarities with the interior of Gigafactory 3 in China, which, of course, is intended for electric vehicle production.

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Tesla has been road-testing the Semi since it was unveiled almost two years ago. Since then, both Semi prototypes have been sighted in multiple parts of the country. At times, the vehicles were spotted bobtailing (traveling without a trailer attached), while at other times, the all-electric trucks were seen pulling a trailer. More recently, the red-wrapped Semi prototype has been seen pulling a trailer filled with concrete weights, as could be seen in the recent sighting above.

Just like Tesla’s existing lineup of vehicles, the Semi is expected to have the potential to disrupt the highly-lucrative trucking market. Thanks to its four Model 3-derived electric motors, the Tesla Semi boasts a lot of power and torque, allowing the vehicle to accelerate from 0-60 mph in 5 seconds flat without a trailer. With a full load, the Semi is still capable of reaching highway speeds in around 20 seconds. This acceleration could be seen in several sightings involving the vehicle, proving that when it starts getting released, the Semi would likely outrun its fossil fuel counterparts on a regular basis.

Watch the Tesla Semi visit the Dublin store in the video below.

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla utilizes its ‘Rave Cave’ for new awesome safety feature

Part of the massive interior overhaul of both the Model 3 “Highland” and Model Y “Juniper” was the addition of interior accent lighting to help bring out the mood of the vehicle, increase the customization of the interior, and to create a unique listening experience.

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Credit: Tesla | X

Tesla is utilizing its ‘Rave Cave’ for an awesome new safety feature that will arrive with the upcoming Spring Update for 2026.

Part of the massive interior overhaul of both the Model 3 “Highland” and Model Y “Juniper” was the addition of interior accent lighting to help bring out the mood of the vehicle, increase the customization of the interior, and to create a unique listening experience.

Tesla added a Sync Lights feature that will strobe the accent strips with the beat of the music.

It is one of the most unique and one of the coolest non-functional features of a Tesla, as it does not improve the driving of the vehicle, but makes it a cool and personal addition to the interior.

However, Tesla is going to take it one step further, as the Rave Cave lights will now be used for blind spot recognition. This feature will be added as the Spring 2026 Update starts to roll out.

Tesla writes:

“Accent lights now turn red when an object is in your blind spot and your turn signal is engaged, or when an approaching object is detected while parked.”

This neat new safety feature will now increase the likelihood of a driver, who is operating their Tesla manually, of seeing the blind spot warnings that are currently available on the A pillar and on the center touchscreen.

These new alerts will now warn drivers of cross traffic as they back out of a parking space with little to no visibility of what is coming. It is a great new addition that will only increase the safety of the vehicles, while also utilizing something that is already installed in these specific Model 3 and Model Y units.

The Model 3 and Model Y were the central focus of the Spring 2026 Update, especially considering the fact that the Model S and Model X are basically gone, with only a few hundred units left. Additionally, Tesla included new Immersive Sound and Car Visualization for the Model 3 and Model Y specifically in this new update.

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Tesla parked 50+ Cybercabs outside its Texas Factory with some crash tested

Dozens of Tesla Cybercabs have been spotted at Giga Texas crash testing facility ahead of launch.

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Tesla Cybercab fleet spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)
Tesla Cybercab fleet spotted at Gigafactory Texas on April 13, 2026 [Credit: Joe Tegtmeyer)

Drone footage captured by longtime Giga Texas observer Joe Tegtmeyer shows over 50 units of Tesla Cybercab at the Austin factory campus, including several units clustered by Tesla’s on-site crash testing facility.

The outbound lot at Gigafactory Texas sits just outside the factory exit and serves as the primary staging area where finished vehicles are held before being loaded onto transport carriers or dispatched for validation testing. On any given day, the lot holds a mix of Model Y and Cybertruck units alongside the growing Tesla Cybercab fleet, as can be seen in the drone footage captured by Joe Tegtmeyer.

Tesla Cybercab fleet spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)

Tesla Cybercab fleet spotted at Gigafactory Texas on April 13, 2026 [Credit: Joe Tegtmeyer)

Roughly 50 Cybercab units are visible across the campus, parked in tight organized rows. Most of the units visible still carry steering wheels and pedals, temporary additions Tesla included to satisfy current safety regulations while the vehicles accumulate real-world data ahead of full regulatory approval for a steering wheel-free design.

Tesla Cybercab fleet spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)

Tesla Cybercab fleet spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)

Tesla operates dedicated Crash Labs at both its Giga Texas and Fremont facilities that are purpose-built for controlled structural crash tests. Historically, automakers begin intensive crash testing roughly one to two months before volume production kicks off. The Cybertruck followed almost exactly that pattern. The Cybercab appears to be on the same track facility that we first saw back in October 2025.

Tesla Cybercab crash test units spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)

Tesla Cybercab crash test units spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)

The first production Cybercab rolled off the Giga Texas line on February 17, 2026. Volume production is now targeted for April. Musk previously wrote on X that “the early production rate will be agonizingly slow, but eventually end up being insanely fast,” and separately stated Tesla is targeting at least 2 million Cybercab units per year. Commercial robotaxi service in Austin is targeted for late 2026.

 

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Tesla 2026 Spring Update drops 12 new features owners have been waiting for

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Tesla announced its Spring 2026 software update, and it’s the most feature-dense seasonal release the company has put out. The update covers twelve named changes spanning FSD, voice AI, safety lighting, dashcam storage, and pet display customization, among other things.

The centerpiece for owners with AI4 hardware is a redesigned Self-Driving app. The new interface lets owners subscribe to Full Self-Driving with a single tap and view ongoing FSD usage stats directly in the vehicle.

Grok gets its biggest in-car upgrade yet. The update adds a “Hey Grok” hands-free wake word along with location-based reminders, so a driver can now say “remind me to pick up groceries when I get home” without touching the screen. Grok first arrived in vehicles in July 2025, but each update has pushed it closer to genuine daily utility. Musk framed the broader vision clearly at Davos in January, saying Tesla is “really moving into a future that is based on autonomy.”

On safety, the update introduces enhanced blind spot warning lights that integrate directly with the cabin’s ambient lighting, building on the blind spot door warning that arrived in update 2026.8.

Dog Mode has been renamed Pet Mode and now lets owners choose a dog, cat, or hedgehog icon and add their pet’s name to the display.

Dashcam retention now extends up to 24 hours, up from the previous one-hour rolling loop, with a permanent save option for any clip. Weather maps now show rain and snow with better color differentiation and include the past hour of precipitation data along the route.

Tesla has now established a clear rhythm of two major OTA pushes per year. As with last year’s Spring update, that cycle started taking shape in 2025 with adaptive headlights and trunk customization. The 2025 Holiday Update then added Grok to the vehicle for the first time. This Spring follows that structure: the Holiday update introduces new architecture, and the Spring update broadens it across the fleet.

Two notable features still did not make it. IFTTT automations, which launched in China earlier this year, were held back from this North American release for unknown reasons, and Apple CarPlay remains absent, reportedly still delayed by iOS 26 and Apple Maps compatibility issues.

Below is the full list of feature updates released by Tesla.

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