Tesla will expand the use of the cabin camera for HOV lane use
Not a Tesla App
Tesla hacker @greentheonly recently decompiled Tesla's firmware for software update 2023.44.1 and found a few goodies under the hood.
Green found references to various media player improvements and an upcoming feature for that makes clever use of the in-cabin camera.
Shaka: Tesla's New Media Player
Tesla began switching to a web-based media player last year with Apple Music and has slowly migrated their audio services to the new player.
However, now Tesla is switching to a different open-sourced web player called Shaka.
While the design of the player is separate and is expected to remain the same, Shaka offers advances such as deep support for various audio and video codecs, including those with DRM.
Shaka isn't just an audio player and could be used for video playback as well. Shaka also offers support for subtitles, ads and more. It'd be interesting to see if Tesla is thinking about creating an audio service that is supported by ads and doesn't require premium connectivity. It's not clear which features Shaka features Tesla will leverage, but their software engineers are likely switching to Shaka for ease of development and better support.
Apple Podcasts
Another notable find is a mention of Apple Podcasts, which isn't currently available in Tesla's music services. Apple Podcasts is going to be its own individual app and isn't expected to require an Apple Music subscription. It'll allow users to easily listen to existing podcasts and sync their progress if they use the Podcasts app on iOS.
There are also planned updates around variable playback speeds for media content, including 1.25x, 1.5x, and 2x speed options. As Green indicated, this feature offers greater flexibility in how users consume media, allowing for a personalized listening experience. It remains unclear whether these playback speeds will be available across all platforms or solely for Apple Podcasts.
Automatically Determine Use of HOV Lanes
In an innovative application of in-car technology, this update suggests the use of the cabin camera to turn High Occupancy Vehicle (HOV) lane usage automatically. This feature would be contingent on additional cabin camera permissions. However, if you want Autopilot, (or presumably Full Self Driving) to ride in the HOV lane, it will be able to determine its eligibility automatically.
Activating Autopilot for HOV lanes is currently a manual process. However, considering that eligibility for many states' HOV lanes depends on the vehicle's occupancy, it's smart to utilize the cabin camera to automatically count passengers.
Since some states offer HOV lane use to EVs, even if they don't meet the occupant threshold, this new feature will likely be an option. Tesla may simply change the HOV lane use option from a toggle to a new setting that offers three options - Always, Never, Auto (Based on Occupants).
While references to these enhancements were found in Tesla software update 2023.44, they're not available quite yet. However, considering that there are already references to these new features in a production update, it may not be long before these features are exposed.
Tesla's holiday update is right around the corner and could arrive as early as this week. Some of these features may be a present from Santa Musk himself.
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Following a period of radio silence from Tesla on FSD updates, Elon Musk has finally hinted that progress is continuing behind the scenes on FSD and that “Several major improvements are incoming.” We’re pretty excited - it has been over 100 days since the last FSD update, and we haven’t heard much since then.
The latest versions of FSD were V13.2.8 for AI4 vehicles and V12.6.2 for HW3 vehicles, both of which were released in January of this year — almost four months ago. While development has been ongoing internally, many have been wondering what the next public release will be. Will it be FSD V13.3, or will we jump straight to FSD V14.
Decoupled Releases & Spring Update
Tesla has now begun pushing Early Access users the 2025 Spring Update without an FSD version change. This means that we can expect the next FSD update to likely be based on the 2025.14 branch.
It’s worth noting that Tesla can add improvements to FSD at any time - and sometimes they do make minor changes without incrementing release numbers - small flag changes in FSD’s software to address how it does a specific task, or what data is uploaded.
With all that said, we expect the Spring Update to begin going out to more of the fleet in the coming days. We’re currently seeing about 58% of the fleet on the Spring Update, and only 30% of the fleet on the older 2025.8 January Update.
Not A Tesla App received information that an upcoming update was set to bring features from other AI4 vehicles to the Cybertruck, including Start FSD from Park, Unpark, Actually Smart Summon, and more. This update was intended to bring it closer to feature parity with the rest of Tesla’s AI4 fleet, but for now, Cybertruck remains the redheaded stepchild of the fleet.
We’re still confident that Tesla is working on this, and the continued delays on the release of an FSD update could point to the Cybertruck and a lack of data continuing to be a pain point for Tesla’s AI team. Cybertruck owners, including the author, have noted that FSD-equipped Cybertrucks continue to upload several hundred gigabytes or more of data per month. This topped out at nearly 1.9 TB of data uploaded in April 2025 for the author.
That’s a massive amount of data - and other users on social media have mentioned much the same for their own Cybertrucks. Tesla needs as much data as possible to tune the FSD models, and given the small fleet size for the Cybertruck, it requires a vast amount of data per user.
“Major Improvements”
While Elon didn’t mention what constitutes these major improvements, we have a lot of expectations besides what we know about the Cybertruck. Learning from the recent and successful FSD launch in China, Tesla is now able to utilize a more generalized model without specific local training data. This could potentially translate into better performance in North America as well, as the 7.7 million miles globally driven on FSD every day are feeding back into Tesla’s data loop.
We’re hopeful that future improvements continue to focus on improving tracking and decision-making, as well as lane handling. FSD users on X continue to point out issues with lane selection and lane keeping in the latest versions of FSD. On the flipside, Tesla has greatly increased the comfort and smoothness of FSD - and V13 is a prime example of that.
While V13.2.8 is also capable of pulling into parking stalls both forwards and in reverse (thanks to one of those flag changes recently), it does an oddly poor job of parking. Tesla’s Vision Autopark, on the other hand, is exceptionally accurate, even with big vehicles like the Cybertruck. It feels like Tesla is working on the parking lot stack to prepare for the upcoming launch of Robotaxi in June.
What About FSD V14
Back in the Q4 2024 Earnings Call, we heard about FSD V14, and just learned a little bit of what will make it unique. In this case, it's auto-regressive transformers that will improve FSD’s already powerful perception system and help it to predict better how other vehicles and road users will behave around it.
That, alongside a larger model and increased context size, will help FSD manage edge cases and make better decisions. The larger model and context size increases are likely another challenge for Tesla, which is already pushing the hardware limits of AI4 with FSD V13.
We did a deep dive into what we know about V14, which you can read here.
The non-Launch Edition version of the refreshed Model Y began shipping just a few weeks ago. One of the few things you couldn’t get that the Launch Edition came with was the Acceleration Boost. Tesla wasted no time with this vehicle and is now offering Long Range AWD owners the option to purchase Acceleration Boost.
Tesla didn’t offer a Launch Edition version of the new Model 3 when it launched in 2024. While Acceleration Boost is now available for the new Model 3, it remains restricted to the Asian-Pacific market. It’s not clear why it’s not available in other regions, but it’s possible it could be due to battery chemistries.
Boost Now
Acceleration Boost is an option that has generally been offered for most Model 3 and Model Y Long Range Dual Motor variants, providing excellent performance for the price. A vehicle with Acceleration Boost places the vehicle somewhere between the regular Long Range variant and the Performance version.
In the Refreshed Model Y’s case, Acceleration Boost cuts the official 0-60 mph (0-100 km/h) time from 4.6 seconds down to 4.2 seconds, adding a hefty boost. This is achieved by unlocking approximately 100 additional horsepower from the drivetrain through software.
That 4.2-second time is also 0.1 seconds faster than the rated 0-60 on the original Model Y with Acceleration Boost, so it’s another generational improvement right there.
Cost & Availability
Acceleration Boost is priced at the standard $2,000 USD - and will eventually become available in most global markets for that equivalent price. The upgrade is available now in the United States and Canada ($2,700 CAD), and should hopefully be available globally within the next few days.
Owners can purchase Acceleration Boost through the Tesla mobile app from Upgrades > Software Upgrades > Acceleration Boost, or through the vehicle touchscreen from Controls > Upgrades, provided that In-Car Upgrades are enabled (set in the Tesla App).
The vehicle will need a network connection to process the configuration update, which only takes a few minutes. During the configuration update procedure, the vehicle will not be drivable and will reboot.
Eligibility
It is important to note that the Long Range Rear-Wheel Drive (RWD) variant, which is available in Europe and Asia-Pacific, is not eligible for this upgrade as it lacks the necessary dual-motor configuration.
Owners of the Launch Edition already have this feature by default and won’t need to purchase it.
No Track Mode
If you’re hungering for Track Mode and all the functionality it offers, we recommend waiting for Tesla to release the Performance variant of the Refreshed Model Y. While Elon did mention in the past that Acceleration Boost would grant access to Track Mode, it hasn’t happened quite yet.
Is It Worth It?
Acceleration Boost helps to bridge the gap between the Performance variant and the Long Range AWD variant, offering quicker acceleration without the need to opt for the dedicated and more expensive Performance variant.
This is especially so today, where the Refreshed Model Y Performance hasn’t been announced yet - so if you’ve already purchased a Long Range AWD and want to go just a bit faster, this is a fantastic option at a good value.
The difference in acceleration is noticeably faster, just like Acceleration Boost with the original Model Y. If you really want to take off a little faster or want to take the vehicle to the track, this will definitely be a worthwhile upgrade.
Tesla hasn’t noted a reduced range with this upgrade, similar to the refreshed Model 3’s Acceleration Boost. Older models had about a 5% range loss due to the additional always-available acceleration and cooling requirements.
This is one of Tesla’s most popular upgrades due to its relatively low cost while also adding some additional value to the vehicle.
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