During day and night, Tokyo City Garden has different appearances to show the transition of function, to realize public transport automation. At night, the system will be a train station, Self-driving vehicle is a part of building space filling up the building and combining the appearance, supplying energy for train and become a new landmark in Tokyo. And during the day, Tokyo City Garden overturns the space to become vertical traffic evacuation. For providing people public space, the building turns to be a vertical garden from parking lot, and gain highest effectiveness in urban space.