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Tesla’s no-side-mirror approach becomes feasible as NHTSA ponders camera-based systems
When Tesla unveiled the next-generation Roadster and the Cybertruck to the world, the two vehicles immediately shocked the automotive industry. The Roadster stunned because of its insane specs, and the Cybertruck shocked because of its unorthodox design that is unlike any other pickup truck on the market. However, the two vehicles also share something very unique: they both lack side mirrors.
Federal Motor Vehicle Safety Standard No. 111, titled “Rear Visibility,” requires all vehicles to “be equipped with rearview mirrors to provide drivers with a view of objects that are to their side or their side and rear.” However, the NHTSA recently hinted that “light vehicles and heavy trucks” may eventually be equipped with camera systems instead of traditional side mirrors.
An edition of the United States government’s Federal Register from late 2019 shows the National Highway Transportation Safety Administration sought more information on the possibility of vehicles utilizing a “Camera Monitor System,” or CMS. The removal of mirrors instead of camera systems would eliminate the need for traditional side mirrors and possibly rearview mirrors, too.
Tesla’s absence of side mirrors started back in 2013 with the unveiling of the Model X. After wrestling with the idea of a side-mirrorless SUV to increase aerodynamic performance, CEO Elon Musk stated that manufacturers were required to install side mirrors on vehicles. A side mirror-less design actually benefits electric cars like Teslas, since side mirrors increase drag, reducing range. This was done by Audi with the e-tron, with the vehicle being offered with a side mirror-less trim that is slightly more efficient.
The Cybertruck’s side mirrors were absent during its unveiling event in November 2019. Instead of regular mirrors, Tesla had equipped the vehicle with Autopilot cameras that are in the truck’s front fender. Many enthusiasts of the electric carmaker speculated that this was a design that wouldn’t enter production as regulations still existed that required side mirrors.
To determine the effectiveness of camera systems instead of traditional mirrors, the NHTSA conducted its research and testing. The organization also examined testing performed by other parties. The CMS noted that during a trial period from 2006 to 2011, NHTSA research showed that several safety concerns arose from the use of cameras instead of mirrors. These stemmed from glares when sunlight touched the cameras. However, the German Federal Highway Research Institute published a separate study that showed the CMS meets “specific quality criteria” and can provide “sufficient” rear visibility for drivers.
So the question is: What has changed in the nine years since the study concluded? For one, cameras have gotten significantly better. What was once a quality piece of photography equipment can be found on the back of an iPhone. High-resolution pictures and videos are not uncommon, and it is not rare for even extremely affordable cameras to provide better quality images than what was available in 2011.
To determine an accurate and fair assessment of the CMS, a new study should be performed using the 2020 technology. The use of rearview backup cameras is a standard feature on most vehicles today. While such systems are used mostly when backing into a parking spot, it is still relevant, and it shows that the widely adopted technology can be used in an effective and safe manner. This feature could be expanded on, and mirrors could be removed from vehicles if the proper research was performed and quality cameras were placed on a vehicle’s exterior.
Tesla has hinted at mirrorless driving in the past, and the door is open now more than ever. It seems this system could be integrated into performance vehicles like the Roadster, or pickups like the Cybertruck in the future. The designs of these two all-electric vehicles have hinted towards a future that does not include traditional side mirrors, which could change the way other carmakers design vehicles as a whole. Tesla’s minimalistic interior and large centrally-located dash screen has been adopted by many other carmakers, showing the electric car company influences other automakers in the industry. A side-mirror-less theme may be the next big trend that Tesla starts.
Although the two vehicles are built for completely different use cases, Tesla utilized engineering expertise while developing both the Cybercab and Semi to build a thermal architecture that would fit both vehicles. Of course, with some slight revisions.
The development was noted by Lars Moravy and Dan Priestley last week at Tesla’s Semi Handover event in Sparks, Nevada, where the company showed off its dedicated production facility for the Class 8 truck.
🚨 Tesla designed the integrated thermal systems for Cybercab and Semi at the same time as the vehicles were both in development
Tesla wanted to build one thermal system that worked with both vehicles, apart from small modifications.
Semi and Cybercab share parts 🤯 pic.twitter.com/KmzSsUbrcg
— TESLARATI (@Teslarati) September 25, 2026
Tesla’s decision to develop one thermal architecture for both the Cybercab and Semi is one of the more revealing engineering choices in the company’s 2026 lineup:
“We designed it at the same time we designed the Cybercab and we said okay we’re going to take our most efficient vehicle and our biggest vehicle and we’re going to take one thermal system and make it work for both.”
Core parts, meaning the compressor, pumps, and heat exchangers, are shared, with only modest changes to cooling-loop sizing and a larger radiator on the truck. The result, they said, is a compressor and thermal stack already proven across millions of miles, delivering “reliability from day one.”
Priestley also highlighted a practical payoff of the indirect design:
“There’s no AC lines, there’s no refrigerant lines…It comes from the factory fully charged, sealed with refrigerant, and it just exchanges coolant. It doesn’t actually run refrigerant up to the front of the vehicle.”
This eliminates potentially leak-prone plumbing that would otherwise require hands-on service, reducing overall uptime and potentially cutting into business margins. The megamanifold runs cabin HVAC and every powertrain heating and cooling loop at once, recapturing waste heat from motors and the battery instead of dumping it the way a diesel engine does.
The approach is just the latest chapter in a continuing story of stretching thermal solutions across wildly different vehicles. Model Y’s Octovalve evolved into the Super Manifold used on Cybertruck, and later Model S/X refreshes. Cybercab then introduced Supermanifold V3, which Tesla says is 80 percent automated to build and 38 percent more efficient than typical automotive thermal systems.
This thermal system is also shared with Cybercab – one thermal system for both our most efficient vehicle & our biggest vehicle
— Tesla Semi (@tesla_semi) September 25, 2026
Tesla has done the same with the 4680 cells, both being utilized in the Cybertruck and Semi, and with heat-pump compressors that Priestley noted were already common across the passenger-car fleet.
Concurrent development of crucial vehicle elements buys scale and reliability that a truck-only thermal system could not match. High-volume passenger car parts are cheaper and more accessible, which can give fleets a sealed, low-maintenance loop of operation from their first day of operation.
For owners and operators, that translates into less energy spent on cabin heat in the colder months, fewer refrigerant-related repairs, and a thermal architecture already stress-tested at passenger-car volumes before the first high-volume Semi left the lines in Nevada.
Tesla CEO Elon Musk certainly tipped off some details of the Tesla Roadster event with a broadening of information regarding the company’s decision to delay the unveiling for two weeks.
For years, people have speculated about what the Roadster will be capable of. While there have been plenty of things said about what it *could* do, we have not seen or been told by Tesla what it will actually be capable of.
However, over the past few days, Tesla’s weather updates have truly pushed the speculation into Plaid Mode, basically all but confirming the car will have some sort of aerial capability — whether that would be hovering or fully flying remains to be seen — but it definitely seems that it will be able to leave the ground intentionally.
“Because this event can only be held outdoors…”
Tesla posted on Monday that it would delay the Roadster event until October 15, and it indicated that it had to do this because the event “can only be held outdoors.”
With the potential SpaceX collaboration to develop cold-gas thrusters that will help the vehicle go airborne, doing this indoors is probably not a safe, or even plausible, possibility.
Roadster event update
We’ve been tracking the weather closely with local meteorologists, but given the severe conditions predicted & because this event can only be held outdoors, we’ve made the difficult decision to reschedule.
New date is October 15. Additional details to…
— Tesla (@Tesla) September 28, 2026
FAA Airspace Restriction
The FAA gave Tesla a Temporary Flight Restriction (TFR) for 10,000 feet above ground level, much higher than the typical 2,000-foot restrictions that are usually placed at SpaceX’s McGregor, Texas site.
Tesla Roadster event requires restricted airspace, and the FAA obliges
Some have said that this massive increase is due to Tesla’s need to restrict unauthorized drone use for spying on the event.
Elon Admits High Winds
“Due to high winds, the new Roadster demo is postponed by 2 weeks,” Musk said in a post on X yesterday.
Due to high winds, the new Roadster demo is postponed by 2 weeks https://t.co/dV3ojDh1iT
— Elon Musk (@elonmusk) September 30, 2026
A reply reading, “What’s strong wind got to do with a car demo with four grounded wheels?” was directly below Musk’s post, satirically and sarcastically probing for more details.
All signs are pointing toward an aerial demonstration for the Roadster.
Tesla has secured $30 billion in fresh credit lines from Citibank and Wells Fargo in an effort to scale its biggest current projects.
Tesla agreed to a $20 billion three-year delayed-draw term loan facility from Citibank, it announced on Tuesday. Additionally, it signed a five-year, $8 billion revolving credit facility and a $2 billion, 364-day term credit facility with Wells Fargo.
In a filing with the Securities and Exchange Commission (SEC), that it “may draw” from the $20 billion delayed-draw term “from time to time” and “no more than ten times during the 18 months following the closing date.” This loan matures on September 29, 2029.
The five-year revolving facility from Wells Fargo will also be accessed by Tesla “from time to time,” and will become due and payable on September 29, 2031. Tesla can request two separate one-year extensions.
On the $2 billion, 364-day revolving loan, it becomes due and payable on September 28, 2027. Tesla can also increase its additional commitments to an additional $4 billion across the Revolving Facilities. This would increase the total facilities to $14 billion. Tesla said it does not plan to utilize any of these loans in 2026.
Tesla plans to utilize the money to help prop up its ambitions to scale its biggest products, each of which is either in early launch phases or still in development. Of course, we’re talking about Cybercab and Semi, which have launched, and Optimus, which is still under heavy development and working toward initial release.
All three Tesla products have one thing in common: they’ve all required Tesla to build new manufacturing lines for them.
For the Semi, Tesla built a brand new factory in Sparks, Nevada, adjacent to the Tesla Gigafactory. For Optimus, Tesla sunset Model S and X production at the Fremont Factory, which brought an end to the two flagship models, thus creating manufacturing space for the humanoid robot. Finally, Cybercab is being built at Gigafactory Texas and officially entered production earlier this year.
The cash will help Tesla bolster its finances for the continuing development of these products. Tesla said that it forecasts its CapEx to be over $25 billion, up from just over $8.5 billion last year. These loans surely help with that spending.
Tesla Cybercab and Semi have more in common than you might think
Elon Musk weather update tips Tesla Roadster speculation into Plaid Mode
