It should be the name of the vehicle. Lyrics: Giant pandas travel by car, by boat, by bike, by taxi, by car, by truck, by plane, by plane, by car, by car, by car, by car, by boat, by boat, by boat, by boat, by boat, by bike, by taxi, by car, by car, by car, by car, by boat, by boat, by boat, by boat, by boat, by boat, by boat, by boat, by boat, by boat, by boat, For the video of children's songs related to train whining, please enter 4399 children's song story book, as well as good-looking stories and animations.