Rolls-Royce will run 350 weeks of testing on the 100-car Coachbuild model before customer deliveries begin in 2028.
Rolls-Royce has moved Project Nightingale from design to validation, launching rigorous testing for the Coachbuild Collection limited to 100 cars with 2028 deliveries planned.
Spanning the Arctic Circle, the Arabian Peninsula, and Southern Europe, the development program involves 350 collective weeks of engineering work to validate performance in extreme thermal conditions.
Engineers will subject the Nightingale roof to 10 separate tests, including 15,000 opening and closing cycles at temperatures reaching 80 degrees Celsius to verify durability.
Speeds of up to 250 kilometers per hour and altitudes of 2,750 meters await prototypes during high-speed and elevation testing phases designed to refine wind noise performance.
The project takes its name from Le Rossignol, the house built by company founder Henry Royce near his winter home on the French Riviera, honoring historical testing ties in Southern France.