Cadillac channels its past convertibles with Sollei concept

• Cadillac previewed a possible electric convertible flagship in concept form
• The Sollei concept incorporates a 2+2 seating arrangement in a leather and wood-lined cabin
• The “Sol” within the Sollei name refers back to the sun

Cadillac has shown what a contemporary convertible from the brand might seem like with Monday’s reveal of the Sollei concept.

Unveiled at Cadillac House at Vanderbilt, which forms a part of the sprawling General Motors Global Technical Center in Warren, Michigan, and is where the similarly styled Celestiq is built, the electrical convertible is described by Cadillac because the brand’s “vision” to supply a drop-top with modern design.

Cadillac hasn’t said what underpins the Sollei but a probable bit is GM’s Ultium battery and technology set, which underpins all current Cadillac EVs, including the Celestiq. Beyond the styling, and potentially the platform, the concept further borrows from Cadillac’s current EV lineup with its 55-inch curved display that spans the dash, a feature that debuted within the Celestiq and likewise appears within the 2025 Escalade IQ and updated 2025 Escalade.

Forming the remaining of the cabin is 2+2 seating, plus leather trim that matches the colour of the outside, on this case a hue generally known as “Manila Cream.” Cadillac used it on vehicles within the late Fifties. And the wood panels used for the seatbacks are supposed to depict the rays of the sun. The “Sol” in Sollei can be a reference to the sun.

Cadillac can be using the Sollei concept to reveal how sustainable materials might be introduced to the brand’s lineup. Considered one of these is a leather-like material created from mycelium, which is the underground structure of mushrooms and other fungi. It’s used for a cell phone charging pad and on another areas of the dash.

On the surface, the Sollei concept matches the design of the Celestiq on the front and rear. The concept also looks to have a comparatively short dash-to-axle ratio, leading to an almost stubby search for the front third of the vehicle when viewed from the side.

Cadillac has revealed convertible concepts within the not so distant past, though those never made production. What’s different this time around is the specialized production line Cadillac established for the Celestiq. It features equipment designed for low-volume production, akin to 3D printers, and will potentially be used to churn out Solleis alongside the Celestiq.

The Sollei is not the only concept due from Cadillac this yr. The brand also plans to preview its plans for performance within the EV era with the Opulent Velocity concept, a teaser for which was shown in March.