Introducing the world's most fuel efficient automobile! The Dream Machine utilizes breakthrough dream harness technology. By using your dreams and imagination the machine is capable of reaching endless destinations! Take a road trip, deliver pizzas or patrol the neighborhood in Build a Dream Playhouse's Dream Machine. Dreams Per Gallon (DPG): unlimited. Spacious interior. Driver and passenger doors. Trunk. Moon roof. Fold down dashboard. Side view cardboard mirrors. length: 53.5. height: 27. width: 34.5.