The three audio plays bring children's favorite vehicles up close: They learn how crawler and wheeled excavators move, what tools and buckets the excavator needs, and what it can do with them. With "Tatütata," rescue vehicles are quickly on the scene of an accident, and trucks carry the heaviest loads on their backs. With fun rhymes, everyone remembers the different colors of the trash bins and musically accompanies Max, the garbage man, throughout the day.