Lionel DT&I LEGACY BOOM CAR - LNL681887LEGACY Boom Car with Crane Sounds Add realistic crane and work crew sounds to the action by adding a matching boom car to your crane operations! Realistic sounds are synchronized to crane actions including rotating cab, engine effort, boom and hook adjustments, and outriggers engaging. You'll hear the work crew too as the action unfolds, and you can even add our own signature crane air horn "quill" through your CAB 2 Remote Controller.