The sports cars are part of a 10-vehicle package GM recently sent to the U.S. Secret Service for testing and evaluation.

GM engineer Tony Roma gave Jay Leno a thorough tour of the 2025 Cadillac Celestiq, the American luxury brand's bespoke ...

CT4-V Blackwing IMSA Edition with 6-speed manual, Rift Metallic paint, and full carbon package. A rare piece of Cadillac ...