General Motors announced on April 28, 2026, that it is rolling out Google Gemini to approximately four million model year 2022-and-newer Cadillac, Chevrolet, Buick, and GMC vehicles with Google Built-in via an OTA update—one of the largest fleet deployments of a frontier LLM to date. Gemini replaces Google Assistant with free-form conversational handling that maintains context across multi-part queries and can answer vehicle-specific questions using the car's own manual. GM describes this as an interim step toward a proprietary vehicle AI assistant expected later in 2026.