This is a pull-back car featuring a PythagoraGoal and Su, who carries cargo on a flatbed. Pull back Su and load cargo of the appropriate weight (15g) to make it run. (It won't move if you pull it back without any cargo.) Try running it with the included ball (1 included)! It's also fun to use as a mechanism in a "Pythagora Device." There is no box or instruction manual. ●Target age: 3 years and older I am selling this because my child no longer plays with it. It will be disinfected before shipping.