Cadillac Celestiq at the 2025 Greenwich Concours d’Elegance. Display example with production status unverified; not the 2026 Night Test commission. Photograph by Mr.choppers, CC BY-SA 4.0. Resized and JPEG recompressed; no additional crop or scene changes. Photo remains under this license; no endorsement implied.
The most revealing Celestiq feature may be directly above its occupants. If a highly personalized electric luxury car interests you, start a nationwide US car-sourcing conversation with Big Boy Exotics around the way you actually travel. Cadillac's four-section Smart Glass Roof makes that discussion unusually specific: how much daylight does each person want?
This is a look at the production Celestiq's cabin technology, informed by Cadillac's September 23, 2026 US lineup update. That announcement describes a custom-commissioned electric sedan with dual-motor all-wheel drive, four-zone climate control and a starting MSRP in the low-$400,000 range. Cadillac says destination freight is included; tax, title, license, dealer fees and optional equipment are additional, and the dealer sets the final price.
Four zones, different preferences
According to Cadillac's current roof-control guide, the panoramic glass is divided into four individually adjustable sections. Suspended Particle Device technology changes opacity in 25-percent steps. Occupants use the front or rear Command Center, and a roof-console shortcut switches between the fully clear and fully dark settings.
The appeal is easy to understand without a dramatic demonstration. One passenger may enjoy an open view of the sky while another wants less overhead light. A single shade forces the cabin to settle on a shared answer. Dividing the glazing into zones gives the passengers more say in their immediate surroundings.
Our reading is that this fits the Celestiq's commissioning philosophy particularly well. Personalization can describe something chosen once, such as upholstery, or something adjusted throughout ownership. The roof belongs to the second category. Its usefulness should be judged by how readily people can reach a comfortable setting on an ordinary journey.
Try the controls in real daylight
Rear-right view of the Celestiq display example at Greenwich in 2025. Production status is unverified; not BBE inventory. Photograph by Mr.choppers, CC BY-SA 4.0. Resized and JPEG recompressed; no additional crop or scene changes. Photo remains under this license; no endorsement implied.
A sensible viewing appointment should include time in the rear seats. With the vehicle safely parked, ask for a demonstration of each section, then the whole-roof shortcut. Check whether the menu is understandable to someone using it for the first time. Repeat the exercise from the front passenger position rather than letting the driver's view decide everything.
Include both bright and shaded conditions if practical. Showroom lighting cannot answer every question about reflections on a screen, the appearance of pale trim or the sensation of daylight overhead. Bring the person who regularly shares the car, because agreement on a paint color does not necessarily mean agreement on cabin brightness.
This is also a useful way to separate an attractive feature from a feature you will use. If everyone quickly chooses a setting and leaves it alone, that simplicity has value. If the controls require repeated attention, the demonstration should establish whether the adjustment process suits your habits.
A commission still needs an ownership plan
Cadillac's August 12, 2026 Night Test announcement offers a recent example of its bespoke approach. That individual commission combines dark exterior details with contrasting black and gray cabin materials and was hand-assembled in Warren, Michigan, using US and globally sourced parts. It illustrates a design direction, rather than a specification every Celestiq shares.
For any particular example, request the documented configuration and discuss service support, charging arrangements and the practicalities of your garage. Our electric-luxury ownership planning guide provides a useful starting framework for the charging conversation, although its vehicle-specific details concern the Rolls-Royce Spectre.
A convincing luxury cabin should work for its occupants after the first impression fades. The Celestiq's roof offers an unusually tangible way to explore that idea. Tell Big Boy Exotics your priorities for a nationwide US vehicle search, including the comforts and configuration details you want verified.