This is a one-of-a-kind prototype developed in the late 1970s by Harry Bradley, one of GM’s top designers, and built by Dave Crook, an esteemed engineer brought in specifically for this project. Designed as a futuristic evolution of the Firebird for the 21st century, it features a completely bespoke design, with a low-profile beltline, an imposing rear section, and an aerodynamically advanced front-end study. The interior was designed to reflect the cutting edge of comfort and technology at the time.

Painted in red with a tan interior, the Firebird ONE is powered by a GM 350ci V8 mated to an automatic transmission. Everything on this vehicle is custom-built, and GM spared no expense in making it road-legal and fully drivable. The car was used in the U.S. after its development and remains in regular use by its current owner.

The seller says that this prototype comes with a comprehensive historical file, including original design sketches and detailed development records from GM. Still in its original state, the car has been well maintained and remains in very good condition. This operational concept car is completely unique, and all documentation confirms its provenance and authenticity. Find it for sale at €235,000 (today $248,000) here in Aix-en-Provence, France.