Construct a solar-electric car and four additional models using an innovative motor module that can be powered by a solar cell or batteries. Build a race car that drives across the floor, a helicopter with spinning rotor blades, a windmill with spinning turbine, a jet plane, and a gyrocopter. Learn how solar cells convert energy from sunlight into electricity to drive the motor and move your models. Full-color, 32-page color instruction book. 30 building pieces.