The Tesla Semi has been proving itself in real-world situations, with the company’s fleet of all-electric Class 8 trucks transporting over 20,000 battery packs from Gigafactory Nevada to the Fremont Factory. The update was shared by Tesla Senior Manager for Semi Truck Engineering Dan Priestley, who recently provided some insights on the US Environmental Protection Agency’s (EPA) Phase 3 rules.
The EPA recently announced a final rule, “Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3.” As stated by the agency on its official website, the rule sets stronger standards to reduce greenhouse gas emissions from heavy-duty vehicles beginning in model year 2027. Vehicles covered by the new standards include large trucks like day cabs and sleeper units.
The EPA’s Phase 3 rules were praised by Priestley, who noted that the Tesla Semi has been proving that all-electric trucks can run the same route and carry the same load as diesel trucks at a significantly lower operating cost. Priestley added that Tesla’s fleet of Semi units have transported over 20,000 battery packs from Giga Nevada to the Fremont Factory. The executive also noted that he believes full market adoption of all-electric trucks like the Tesla Semi might happen faster than expected.
Every day, the Tesla Semi demonstrates that battery electric trucks can directly replace diesel trucks. With our own fleet of Semis, Tesla has shipped >20,000 battery packs out of Gigafactory Nevada to support Fremont vehicle builds. These trucks run the same route, carrying the… https://t.co/KO9eQO2IV3— Dan Priestley (@danWpriestley) March 29, 2024
“Every day, the Tesla Semi demonstrates that battery electric trucks can directly replace diesel trucks. With our own fleet of Semis, Tesla has shipped >20,000 battery packs out of Gigafactory Nevada to support Fremont vehicle builds. These trucks run the same route, carrying the same load (no load reduction for weight) as the diesel trucks running this route but at substantially lower operating cost. Now, it’s about scale.
“The EPA Phase 3 rules will help hasten the overall fleet transition to zero emissions and address the harmful particulate emissions and other pollutants from diesel trucks. In combination with the superior economics and experience that battery electric trucks provide, I expect full market adoption will occur faster than many think,” Priestley wrote in a post on X.
Every day, the Tesla Semi demonstrates that battery electric trucks can directly replace diesel trucks. With our own fleet of Semis, Tesla has shipped >20,000 battery packs out of Gigafactory Nevada to support Fremont vehicle builds. These trucks run the same route, carrying the… https://t.co/KO9eQO2IV3— Dan Priestley (@danWpriestley) March 29, 2024
Tesla Vice President of Public Policy and Business Development Rohan Patel also praised the EPA’s proposal. In a post on X, Patel noted that the pollution standards would help accelerate the electrification of the trucking industry. He also shared the same sentiments as Priestley by stating that the Tesla Semi is already proving on a daily basis that zero emissions trucks will dominate the market in the future.
“Michael Regan is back at it again with a solid EPA proposal to address the significant public health impacts of air pollution from the heavy-duty trucking vehicle fleet. These pollution standards will help jumpstart electrification of the trucking industry. The Tesla Semi is proving on a daily basis that zero emission trucking will dominate in the near future. We are in the process of building a manufacturing facility at Giga Nevada to significantly increase production,” Patel noted.
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News
Tesla one-ups Waymo once again with latest Robotaxi expansion in Austin
Tesla’s new Robotaxi geofence measures roughly 171 square miles of Austin’s downtown and suburbs. This is more than double the size of Waymo’s geofence, which measures 90 square miles.

Tesla’s expansion of the Robotaxi geofence on Tuesday morning was a one-up on Waymo once again, as the automaker’s service area growth helps eclipse its rival in an intense back-and-forth.
A lot of conversation has been made about Tesla’s rivalry with Waymo in terms of the capabilities of its driverless ride-sharing service in Austin, Texas.
The two companies have sparred with one another, answering each other’s expansion, and continuing to compete, all to the benefit of consumers in the region.
Tesla expanded the geofence of Robotaxi once again this morning, and it is another growth that catapults it past Waymo’s service area in Austin — this time by a considerable margin.
Comparison of Tesla’s vs Waymo’s Robotaxi geofence map in Austin, Texas.
Today, @Tesla again massively expanded their geofence area, making it significantly bigger than Waymo’s. pic.twitter.com/tHLJ2qabZJ
— Sawyer Merritt (@SawyerMerritt) August 26, 2025
Tesla’s new Robotaxi geofence measures roughly 171 square miles of Austin’s downtown and suburbs. This is more than double the size of Waymo’s geofence, which measures 90 square miles.
On July 14, Tesla officially overtook Waymo in terms of service area in Austin. But just a few days later, Waymo had responded with a bold statement, expanding from 37 square miles to 90 square miles.
Sarfraz Maredia, Global Head of Autonomous Mobility & Delivery at Uber, said the move “unlock[ed] another key milestone in Austin as our operating territory with Waymo expands from 37 to 90 square miles, which means that even more riders can experience Waymo’s fully autonomous vehicles through the Uber app.”
Tesla did not respond immediately, but it took its time with validation vehicle testing in the Austin suburbs, as we reported yesterday:
Tesla looks to expand Robotaxi geofence once again with testing in new area
Today’s expansion is perhaps the biggest step Tesla has taken in its efforts to continue to grow its Robotaxi platform. This is not only because the company has significantly expanded the size of the geofence, but also because it has ventured into suburban areas and even included Gigafactory Texas in its service area.
Waymo could come up with another timely response as it did when Tesla expanded in late July. We’ll wait to see what it comes up with, as this awesome competition between the two companies is accelerating innovation.
News
Tesla Robotaxi geofence expansion enters Plaid Mode and includes a surprise
Now, on August 26, the Robotaxi geofence has expanded once again, and is estimated to be about 130 square miles.

Tesla has expanded its Robotaxi geofence in Austin for the third time since its launch in late June, and the company added a big surprise with this new service area.
After launching on June 22, Tesla’s driverless Robotaxi service has been expanded three times. Its initial launch was about 20 square miles in size. The first expansion occurred on July 14 and was roughly 42 miles large, more than double the initial geofence size.
The second expansion occurred on August 3 and brought the total service area to roughly 80 square miles.
Now, on August 26, the Robotaxi geofence has expanded once again, and is estimated to be about 170 square miles.
🚨 Tesla has expanded its Robotaxi geofence in Austin once again!
This is the third time the service area has expanded! pic.twitter.com/ZzIWWLIgsQ
— TESLARATI (@Teslarati) August 26, 2025
The expansion of the Robotaxi geofence seemed to show the company’s focus on getting the service to the areas East and West of downtown was an utmost priority.
We reported on the Bee Cave region of the Austin suburbs being a place where Robotaxi validation vehicles were spotted testing in recent days.
Bee Cave is included in the new geofence.
However, that is not the biggest addition to the geofence, and it’s not even close. Tesla added a major area to the new geofence, one that fans of the company will absolutely love: Tesla Gigafactory Texas.
🚨 Tesla Gigafactory Texas is now available in the new Robotaxi geofence: https://t.co/Ctcm0HNZk4 pic.twitter.com/7nyhQNYLww
— TESLARATI (@Teslarati) August 26, 2025
The big question that remains is whether Tesla is expanding the size of its fleet of Robotaxi vehicles in Austin. There have been many questions about the expansions of the fleet and not necessarily the geofence, and while the latter is certainly considered progress, Tesla will need to enable more Robotaxi into the vehicle population to handle the additional rides.
Tesla has been planning to do so, but is still prioritizing safety and does not want to rush any part of the Robotaxi process.
Tesla is also looking to expand to new cities altogether. It is currently moving toward a Robotaxi launch in Florida, Arizona, and Nevada, and has also opened up job postings for Robotaxi operators in New York.
Elon Musk
Elon Musk reiterates his most optimistic prediction yet with “UHI” forecast
Despite his polarizing nature, Elon Musk is, at his core, an optimist.

Despite his polarizing nature, Elon Musk is, at his core, an optimist. If he were not one, he would never have founded Tesla or SpaceX, or pursued projects such as Neuralink or xAI.
Musk’s optimism was on full display on social media platform X recently, when he shared what could very well be his most optimistic prediction yet.
Robots and humans
The Tesla CEO recently responded to a post from David Scott Patterson, who estimated that all jobs will be replaced by AI and robots easily by 2030. In his post, Patterson noted that if robots are sold at the same rate as vehicles, it could result in an output of 320 million robots per year.
Musk responded that eventually, intelligent humanoid robots will far exceed the population of humans, and “there will be many robots in industry for every human to provide products & services.”
Musk is already taking steps to achieve such a future. Tesla’s Optimus humanoid robot is expected to see its first “legion” produced this 2025. During an All-Hands meeting earlier this year, Musk also hinted to Tesla employees that the company will try to produce about 50,000 Optimus robots next year.
Universal High Income (UHI)
Musk has shared similar sentiments in the past, so it was no surprise that some X users asked the CEO how humans could sustain their lives when robots replace working individuals. To this, Musk responded that a Universal High Income (UHI) would be implemented, which should provide people with the best medical care, food, and transport available.
“There will be universal high income (not merely basic income). Everyone will have the best medical care, food, home, transport and everything else. Sustainable abundance,” Musk wrote in his post.
Musk’s comment about sustainable abundance seems to be a prevalent theme in his recent optimistic comments. During Tesla’s second quarter earnings call, for example, Musk hinted that his Master Plan Part Four will describe a path towards sustainable abundance in a post-autonomy world.
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