Using this Mack Hauler Playset is super easy! First, press the button on Mack to hear his signature sounds. To unlock unique sounds, drive any Track Talker vehicle to the front of Mack's trailer or place it inside. You can store up to two Track Talker vehicles (sold separately) inside Mack as he's almost 17 inches long. When your kids are done playing, keep the playset in a dry place away from direct sunlight. Avoid dropping it or getting it wet to make sure it lasts a long time. If there's any dirt on it, just use a soft, dry cloth to clean it. Have fun creating your own Cars adventures!