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Tesla ‘Roadrunner’ battery cell facility begins to take shape at Fremont
Recent images taken of Tesla’s battery production facility in Kato Road near the Fremont Factory suggest that the expansion of the site is already underway. According to a Tesla owner-enthusiast who recently visited the location, the site of Tesla’s Project “Roadrunner” is now abuzz with activity.
Tesla community member @sensarpensar opted to visit Tesla’s Fremont delivery center as the company was undergoing its final end of quarter sprint. During his visit, the Tesla owner remarked that there were numerous people taking delivery of their vehicles. Tesla Model Y units that were being handed over to customers also had VINs in the 24k range. This suggests that the company’s production of the all-electric crossover is hitting its stride.
Following his visit to the Tesla’s delivery site at Fremont, the EV enthusiast headed over to the company’s Kato Road facility, where the company’s pilot battery production line is reportedly being ramped. Documents filed to the City of Fremont indicate that Tesla intends to expand the facility by adding another floor to the existing building, and this is exactly what was happening during the Tesla owner’s visit.
In a follow up tweet, @sensarpensar noted that a massive crane has been set up on the site, and there was a significant number of construction workers in the location. Looking at the images, it appears that some of the steel framework of the Kato Road facility’s additional floor has been set up as well. This is quite encouraging to see, as it highlights Tesla’s intention to ramp the operations of its pilot battery cell production line.
According to Tesla’s filings with the City of Fremont, the expanded facility will be housing 45 research and development employees and up to 425 manufacturing workers that are spread through several shifts from Monday to Friday. Multiple job openings related to cell manufacturing activities have been posted by Tesla in recent months as well, including listings for Cell Engineers, Production Process Engineers, and Controls Engineers, all of which were based in Fremont, California.
What is rather interesting is the fact that the Kato Road facility, even with its expansion, is a conservatively-sized location. The facility is comprised of two buildings that cover 184,880 sq. ft. combined. This suggests that Tesla has been able to set up a legitimate pilot battery cell production line in a relatively small location, which is quite impressive in its own right.
Initial reports about Project Roadrunner were posted as early as June 2019, when CNBC reported that Tesla’s Kato Road facility was being used as a “skunkworks lab” to design and produce battery cells and battery manufacturing equipment. These batteries were reportedly next-generation lithium-ion cells, which are expected to be the company’s much anticipated million mile battery.
Below are Tesla’s filings for the expansion of its Kato Road facility.
Tesla Kato Road Update by Simon Alvarez on Scribd
News
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.
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.
A lot of CRAZY new features coming with Tesla’s 2026 Spring Update, including a new FSD app!
– Self-Driving App (AI4 hardware): New app in App Launcher > Self-Driving for one-tap FSD subscriptions, activation guides, and ongoing stats.
– “Hey Grok”: Voice-activated Grok with… https://t.co/ljeYPlq9Qt— TESLARATI (@Teslarati) April 13, 2026
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.
News
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.
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 on April 13, 2026 [Credit: Joe Tegtmeyer)
Tesla Cybercab fleet spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)
Tesla Cybercab crash test units spotted at Gigafactory Texas [Credit: Joe Tegtmeyer)
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.
— Tesla (@Tesla) April 13, 2026
Tesla utilizes its ‘Rave Cave’ for new awesome safety feature
Tesla parked 50+ Cybercabs outside its Texas Factory with some crash tested
