News
Tesla’s ‘Roadrunner’ facility gets a neighbor working on tech beyond the million-mile battery
As the wait for Tesla’s Battery Day continues, more and more speculations are abounding about what the electric car maker might reveal during the highly-anticipated event. Elon Musk has stated that Battery Day’s announcements will be mind-blowing, and based on apparent clues recently observed by the Tesla community, it appears that the CEO may be right on the money.
Recent reports have indicated that Amprius, a battery company currently working on silicon nanowire tech, recently relocated its headquarters to a site that’s just a few hundred feet away from Tesla’s Roadrunner battery facility in Kato Road, Fremont. Considering the firm’s focus, its new headquarters’ rather convenient location, and Elon Musk’s previous references to the use of silicon in batteries, there seems to be a fair chance that Amprius’ move to Fremont may be more than a coincidence.
Amprius notes that it is working on creating silicon nanowires for battery anodes that dramatically improve battery weight and density. The company’s website notes that silicon generally has about 10x the capacity of graphite (carbon), but it has a big drawback in the way that it swells when it’s charged, causing the silicon to fracture. To address this, Amprius utilizes silicon nanowires, which keeps the silicon from fracturing and breaking apart even when it swells.
As noted by EV enthusiast and YouTube host Driving Delta, Elon Musk himself appears to be teasing the use of advanced silicon tech on Twitter last month. In one of his posts, Musk shared some lyrics of the song “Lithium” by Nirvana, whose refrain includes sections that state “I’m not gonna crack.” Granted, Musk may simply be trolling the Tesla community with his posts, but it should be noted that he also talked about the increasing use of silicon anodes five years ago.
“We’re shifting the cell chemistry for the upgrade battery pack to partially use silicon in the anode. This is just a sort of baby step in the direction of using silicon in the anode. We’re still primarily using synthetic graphite, but over time, we’ll be using increasing amounts of silicon in the anode,” Musk noted during a 2015 conference call.
As noted by Amprius’ on its website, the use of 100% silicon paves the way for batteries with the highest energy density, perhaps even at the 500 Wh/kg level. That’s enough to start exploring electric VTOL projects, a topic that Elon Musk has admitted is something that truly interests him. That being said, Professor in Energy Materials and Technologies Ying Shirley Meng, who has made significant contributions to Maxwell Technologies’ battery tech herself, believes that challenges still remain in the use of silicon nanowires.
“We should pay attention to the cost per kg. Even (if) those nanowires work (which I doubt), to produce consistent quality in metric ton scale at 10$ per kg it will be sci-fi for now,” she noted.
Elon Musk, for his part, recently stated that the technology that could allow 400 Wh/kg with a high life cycle and volume production is not too far away. Musk gave a rough timeframe for the technology, stating that such milestones could be achieved in about three to four years.
Tesla’s Battery Day event is expected to introduce the company’s next-generation lithium-ion cells, though speculations suggest that these batteries — which are expected to last a million miles — are based largely on Maxwell Technologies’ dry electrode tech. Maxwell itself has previously noted that it could offer batteries with 300 Wh/kg while stating that it had also identified a path to 500 Wh/kg. With this in mind, it appears that Tesla may already be setting the stage for cells that will likely go even beyond the million-mile battery.
Granted, Amprius’ move to Fremont may be unconnected to Tesla. That being said, the two companies’ goals to align with each other, and Elon Musk’s own references to the use of silicon suggests that Tesla will likely get a lot of value from Amprius’ tech. If speculations prove true, the path to batteries that go even further than the million-mile mark may be feasible in the near future. Such innovations are key to Tesla’s goal of accelerating the transition to sustainable energy, after all.
Watch these recent takes on the Amprius rumors in the videos below.
Elon Musk
Jim Cramer chimes in on Tesla CEO Elon Musk’s pay package
“Don’t be small-minded: Tesla is about robots, Full Self-Driving, the future. Give him his package.”
Investor and host of Mad Money on MSNBC , Jim Cramer, has chimed in on Tesla CEO Elon Musk’s pay package and whether it should be rewarded to the frontman or not.
Cramer has drawn a lot of attention regarding his sentiments on Tesla, as investors have routinely given him a pretty hard time over what he’s said about the company.
For the past few years, we have covered his comments on Tesla when he has something to say, mostly because his opinion on the stock seems to change pretty frequently; at a minimum, he has something different to say about it every few months.
However, Cramer knows Musk’s value to Tesla, and said on Thursday that he believes the CEO deserves his pay package:
“Don’t be small-minded: Tesla is about robots, Full Self-Driving, the future. Give him his package.”
Don’t be small-minded: tesla is about robots, full self driving, the future. Give him his package
— Jim Cramer (@jimcramer) October 23, 2025
Cramer’s comments come just one day after Tesla’s Q3 2025 Earnings Call, where Musk took several opportunities to call out the importance of the pay package and how it could impact the company’s future — with or without him.
Musk said at one point that he would not feel comfortable continuing to develop the company’s massive fleet of Optimus bots without having appropriate control of the company from a voting perspective.
He said he does not want so much power that if he “were to lose his mind,” he could not be removed. However, he does feel he needs to be protected from “activist shareholders,” or “corporate terrorists” like proxy groups Institutional Shareholder Services (ISS) and Glass Lewis:
“My fundamental concern with regard to how much voting control I have at Tesla is if I go ahead and build this enormous robot army, can I just be ousted at some point in the future? …It’s just, if we build this robot army, do I have at least a strong influence over that robot army, not current control, but a strong influence? That’s what it comes down to in a nutshell. I don’t feel comfortable wielding that robot army if I don’t have at least a strong influence.”
At the end of the call, Musk said:
“Like I said, I just don’t feel comfortable building a robot army here and then being ousted because of some asinine recommendations from ISS and Glass Lewis, who have no freaking clue. I mean, those guys are corporate terrorists.”
Cramer is one of many who realize Musk’s importance to Tesla, and how the company would likely lack the guidance and prowess it does without his planning and drive. However, Tesla shareholders will have the ultimate say on November 6 when they vote on Musk’s compensation plan.
Elon Musk
Tesla is stumped on how to engineer this Optimus part, but they’re close
Tesla has been stumped on how to engineer one crucial part of the Optimus bot, but CEO Elon Musk says the company is “on the cusp” of achieving something great with the project.
During the Q3 2025 Earnings Call, Tesla CEO Elon Musk revealed the company is moving closer to a major breakthrough with the Optimus project, and said they are “on the cusp of something really tremendous.”
However, it seems there is one specific portion of the robot that has truly stumped engineers at the company: the hand, fingers, and forearm.
Musk went into great detail about how incredibly complex and amazing the human hand is, highlighting its dexterity and capability, as its ability to perform a wide variety of tasks is especially impressive:
“I don’t want to downplay the difficulty, but it’s an incredibly difficult thing, especially to create a hand that is as dexterous and capable as the human hand, which is incredible. The human hand is an incredible thing. The more you study the human hand, the more incredible you realize it is, and why you need four fingers and a thumb, why the fingers have certain degrees of freedom, why the various muscles are of different strengths, and fingers are of different lengths. It turns out that those are all there for a reason.”
It’s been pretty apparent that Tesla has made massive strides in the Optimus project, especially considering it has been able to walk down hills, learn things like Kung Fu, and even perform service tasks like serving food and drinks.
However, a recent look at a Gen 2.5 version of Optimus posted by Marc Benioff, the CEO of Salesforce, showed that Tesla was likely using mannequin hands until it developed something that was both useful and aesthetically pleasing:
Very likely that these are non-functional to not give away any major details about next-gen Optimus
The hands are amongst the most complex and important parts of the entire project https://t.co/YgoeNjamvI
— TESLARATI (@Teslarati) September 3, 2025
Musk continued on the call last night that the Tesla team was confronted with an “incredibly difficult” challenge from an engineering perspective, and the hands and actuators for that specific part were tough to figure out:
“Making the hand and forearm, because most of the actuators, just like the human hand, the muscles that control your hand are actually primarily in your forearm. The Optimus hand and forearm is an incredibly difficult engineering challenge. I’d say it’s more difficult than the rest of the robot from an electromechanical standpoint. The forearm and hand are more difficult than the entire rest of the robot. But really, in order to have a useful generalized robot, you do need an incredible hand.”
The CEO continued that developing a useful and effective robot was “crucial to the future of the company,” and that he works with Optimus’s design team each Friday night.
News
Elon Musk sets definitive Tesla Cybercab production date and puts a rumor to rest
“The single biggest expansion in production will be the Cybercab, which starts production in Q2 next year.” -Elon Musk
Tesla CEO Elon Musk finally set a definitive date for Tesla Cybercab production and, at the same time, put a substantial rumor regarding the vehicle that has been circulating within the community to rest.
Tesla’s Cybercab was unveiled last October as the company’s two-seater, affordable option that would ultimately be the car used for autonomous travel. It was initially slated for production in late 2025 or early 2026.
Tesla is ramping up its hiring for the Cybercab production team
However, Tesla has finally said it will start production of the Cybercab in Q2 2026, a more concrete date for the company, as it has moved the entire project forward in recent weeks by testing it at the Fremont Test Track and conducting crash safety assessments.
Musk said on the Q3 2025 Earnings Call:
“The single biggest expansion in production will be the Cybercab, which starts production in Q2 next year. That’s really a vehicle that’s optimized for full autonomy. It, in fact, does not have a steering wheel or pedals and is really an enduring optimization on minimizing cost per mile for fully considered cost per mile of operation.”
In that quote, Musk also put a rumor that has been circulating within the community to rest. Some started to speculate whether Cybercab would be sold with a steering wheel and pedals, as many of the elements of the car seemed to hint toward not being exclusively autonomous, including side mirrors being equipped, among other things.
🚨 The 🐐 @JoeTegtmeyer caught this Tesla Cybercab strolling around Giga Texas —
— with a steering wheel?! pic.twitter.com/PUvmpFp3Re
— TESLARATI (@Teslarati) February 24, 2025
It has been interesting to see some consider whether Tesla would sell the vehicle with the elements that would enable human control, especially as there have been a handful of images of the vehicle on company property with a steering wheel spotted.
However, Musk doubled down on the autonomous nature of the Cybercab with this confirmation during the earnings call, something that many investors likely wanted to hear because it was, in a way, a vote of confidence for the company’s path to autonomy.
-
Elon Musk7 days agoSpaceX posts Starship booster feat that’s so nutty, it doesn’t even look real
-
Elon Musk6 days agoTesla Full Self-Driving gets an offer to be insured for ‘almost free’
-
News5 days agoElon Musk confirms Tesla FSD V14.2 will see widespread rollout
-
News7 days agoTesla is adding an interesting feature to its centerscreen in a coming update
-
News1 week agoTesla launches new interior option for Model Y
-
News1 week agoTesla widens rollout of new Full Self-Driving suite to more owners
-
Elon Musk6 days agoTesla CEO Elon Musk’s $1 trillion pay package hits first adversity from proxy firm
-
News5 days agoTesla might be doing away with a long-included feature with its vehicles

