Smart Cruise Control with Stop and Go. The system maintains modulates the speed based on the distance to the preceding vehicle and your desired maximum speed. If the vehicle ahead picks up the pace, the Ceed accelerates up to the set speed. If the vehicle ahead slows down and the predetermined safe distance cannot be maintained, the system will reduce the speed, or even stop and restart the car. A helpful feature, in motorway or stop-and-go traffic (Cruise control on all models, Smart Cruise Control on ProCeed GT-Line S and Ceed (grade dependent).