the breakdown The Cadillac Celestiq Night Test is a one-off commission with a dark Caspia Tricoat Metallic exterior. The 655-hp Celestiq Night Test will make its public debut at The Quail during Monterey Car Week. The Cadillac Celestiq is getting a darker personality for Monterey Car Week. Dubbed the Celestiq Night Test, this one-off commission trades the flagship EV's usual bright colors and chrome for a shadowy exterior, dark wheels, and a more understated cabin. Cadillac Celestiq Night Test Photo by: CadillacA True One-OffUnlike a conventional special-edition package you could order from a dealer, the Night Test is a true one-of-one commission.