Rivian offers a new dynamic roof option for its second-generation R1S and R1T vehicles. It’s a fantastic option for those who want a little extra privacy or are looking to add a little wow factor to their vehicles.
The Dynamic Glass Roof delivers the ultimate flexibility, allowing you to switch seamlessly between privacy mode and panoramic views of the world above your Rivian — all at the touch of a button.
Price
The Dynamic Glass Roof is an option for both the R1S and the R1T and costs the same on both vehicles. In the United States, it is $1,500 USD, while in Canada it goes for $2,200 CAD. In turn, you receive an electro-chromatic glass roof which can change between tinted and clear at the press of a button. In the future, Rivian can even switch it automatically based on whether the vehicle is locked, the outside temperature, or the time of day.
Electro-Chromatic Glass
The electro-chromatic glass takes about 10 seconds to dim, and 5 seconds to brighten up. The shading is lighter on the inside than on the outside. When you look from above, with the roof dimmed, it is almost completely black, with little to no light leakage.
When the roof is brightened up, it is fairly transparent, but slightly less so than a regular glass roof. It’s comparable to a roof with a very light tint when in transparent mode.
How It Works
If you’re curious about how it works, the glass roof has an electro-chromic film sandwiched between glass layers. This film is best used in flat applications, and when it is energized, the particles in the film change direction, allowing the transparency of the glass to change alongside it. It’s a very cool application of physics, and Rivian has done an excellent job integrating it into their vehicles.
Heat Rejection
If you were hoping to pick up the roof for its heat rejection properties, you’ll find this data helpful. While the dynamic glass roof does offer some heat rejection when in privacy mode, it’s minimal. Most of the light and heat that enters a Rivian instead comes through the windshield and the driver and front passenger windows – which are not tinted heavily due to laws around North America.
For jurisdictions where tinting the windshield and front windows is legal, and you’re looking to keep your vehicle considerably cooler, you’re better off tinting those two versus picking up Rivian’s Dynamic Glass Roof.
The Dynamic Glass Roof, when shaded, lets in about 1/3rd of the light as regular glass, but that’s insignificant compared to the amount the windshield and front windows let in. This table, summarized by @Hook_K, provides additional details.
Surface
Watt/m2
Dynamic Glass Roof (Opaque)
10.9
Dynamic Glass Roof (Transparent)
14.0
Panoramic Roof
28.7
Windshield
506.3
Front Side Windows
400.3
Rear Side Windows
116.0
While the Dynamic Glass Roof does indeed provide slight benefits over the standard panoramic roof for heat rejection, it's not a whole lot when you compare it to the heat that comes in through the windshield or front windows.
We’d consider the glass roof an excellent option to keep a bit more of the sun out of your passenger’s eyes and provide you with a bit of privacy if you drive in a city regularly, where there are many places to see inside from above. We’d also recommend it if you love seeing that electro-chromatic glass change from dim to transparent, which is a cool experience.
While Rivian’s dynamic glass roof is a great option, it should be looked at more as a privacy-focused, fun feature rather than a way to keep heat out of your vehicle.
Rivian is officially making its extreme performance ambitions known with the launch of the Rivian Adventure Department, or RAD, for short. What began as a quiet, internal skunkworks team of dedicated designers and engineers has now been formalized into a specialized division tasked with pushing Rivian’s vehicles to their absolute limits.
RAD becomes essentially an AMG, ///M, or GT equivalent inside of @Rivian.
Sounds like we can expect future models to carry the RAD name as a trim level. Think “R1T RAD” perhaps.
By validating the hardware and software in some of the most unforgiving environments on Earth, RAD aims to translate some of the lessons learned from high-performance motorsports directly into exciting consumer features.
From the Desert to Pikes Peak
The roots of the RAD initiative trace back to Rivian’s earliest days, including the grueling 13,000-mile prototype journey from Patagonia to Los Angeles during the filming of the Long Way Up documentary. Since then, the internal passion project has evolved through rigorous real-world motorsport testing.
When a Rivian R1T became the first EV to win the gruelling Rebelle Rally in 2023, the data gathered from conquering the deep sand directly led to the development of Rivian’s Desert Rally drive mode, as well as the Deep Sand mode.
Our team is further developing the deep sand performance of the Tri-Motor R1! It’s incredible :) pic.twitter.com/DNzlGaSVAH
Similarly, when Rivian’s engineers set out to shatter the production electric truck record at the Pikes Peak International Hill Climb, they built a custom internal software tool to adjust torque bias, stability control, and regenerative braking on the fly. They realized one thing along the way: that tool was simply too fun to keep locked away for engineers, and Rivian decided to refine it for customers, too.
The RAD Tuner
That Pikes Peak engineering tool has officially arrived in consumer vehicles as the RAD Tuner. Exclusively available for Gen 2 Quad-Motor owners, the RAD Tuner acts as a high-performance equalizer for the powertrain.
You have access to real-time control over ten different vehicle parameters, including power output, front-to-rear torque split, brake assistance, wheel slip, damping, and roll stiffness. Instead of relying on factory presets, off-road enthusiasts can now dial in their own custom driving dynamics to suit their style and the trails they’re adventuring on.
That’s a level of customizability that’s never really been available in a production vehicle before.
Taking on the FAT Ice Course
To celebrate the formalization of the new division, RAD is making its official public debut this week at the 2026 FAT Ice Race in Big Sky, Montana. They’re also showcasing the new bold orange, red, and white RAD livery - and competing with a brand-new Quad-Motor R1S on the frozen course.
Rivian R1S Quad on studded tires sets a lap around the FAT Ice Race course!
The studded tires help a ton but so does the new RAD Tuner that allows Luke Lynch to dial in all of the suspension and powertrain attributes to his liking
Equipped with studded tires, the first R1S Quad RAD is leveraging RAD Tuner to perfectly control its suspension and powertrain for the low-traction environment - all with 1,025 horsepower on tap. Perfect torque delivery is what keeps a vehicle stable at those speeds and in those conditions, and Rivian is proving that its new performance division isn’t just a marketing exercise - it is a massive commitment to build highly performing electric adventure vehicles.
Skiers at Big Sky Resort in Montana are getting a high-tech lift to the slopes this season that does not involve a gondola. X user Kyle Conner (@itskyleconner) recently shared footage of a fleet of at least six Rivian R1T trucks being used as a specialized shuttle service at the resort.
"6 Rivian R1Ts pulling trailers to move people around Big Sky ski area. So cool!" Conner noted while capturing the electric trucks in action. The implementation is a clever way to solve a common mountain problem: getting people from free parking zones to the ski lifts without forcing them to hike up in heavy gear.
The setup involves the R1T trucks pulling large trailers or carts, each capable of seating more than a dozen people. According to Conner, the shuttle service runs daily from 8:30 a.m. to 6 p.m., effortlessly moving crowds across the ski zone.
It appears that Rivian may have provided both the trucks and the custom trailers to the resort for this specific pilot program. When the sun goes down and the slopes close, the fleet is parked at on-site Level 2 AC chargers to juice up for the next day. Seeing these silent, emission-free pickups replace noisy diesel shuttles is a major win for sustainable mobility in fragile mountain ecosystems.
6 Rivian R1Ts pulling trailers to move people around Big Sky ski area. So cool! pic.twitter.com/l3xIDNuiQa
The R1T is practically overqualified for this job. The Gen 2 (2025–2026) model is a high-performance beast, with the Quad-Motor variant pushing a staggering 1,025 hp and 1,198 lb-ft of torque. It can hit 0–60 mph in just 2.5 seconds, and the Dual Max version offers a massive EPA-estimated range of 420 miles.
More importantly for a ski resort, the R1T features 14.9 inches of ground clearance and advanced off-road capabilities that make navigating icy, snowy roads a breeze. With a max towing capacity of 11,000 lbs, pulling a cart filled with skiers is light work for this truck. Safety is also a major factor, as the R1T is the only EV ever to achieve an IIHS Top Safety Pick+ rating in the pickup category.
The Future of the Brand
This mountain implementation comes at an exciting time for Rivian. While the R1T and R1S continue to prove their worth in extreme conditions, the company is finally nearing the launch of its long-awaited R2 midsize SUV.
The Big Sky implementation is pretty impressive. By putting their hardware into real-world, high-utility roles like this, Rivian is showing that electric trucks are not just for the suburbs — they are rugged enough to keep a world-class ski resort running smoothly and sustainably.
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