CCN61661 Carrera Go!!!/Digital 143 Light & Sound Looping Extension SetLoop Expansion Set Overview: The Carrera Light and Sound Looping Extension Set adds thrilling action to your Carrera race track. Designed for Carrera GO!!!, Carrera GO!!! Plus, and Carrera Digital 143 systems, this expansion set features LED lights and sound effects to create an immersive racing experience! Each vehicle on the track has its own looping section, enhancing the visuals and racing excitement. As cars enter the loops, the LEDs flash, and