1.2 in 1 Trailer and Wind Turbine Playset: The toy is the combination of flat bed trailer and wind turbine. The 2 parts can separate and be played independently. 2.Inertial Flat Bed Truck: No batteries required, no remote controller needed, just push the flat bed truck toy slightly, then release quickly, the truck will move foward with strong inertia power. 3.Steerable and Detachable Design: The flatbed truck toy can turn easily and flexibly as it closely simulates the real truck. In addition, its tractor and the trailer can be separated. 4.Windup Wind Turbine: The blades in the wind generator model can turn automatically without the need of batteries because it adopts windup design. To wind it up, players just need to turn the blades clockwise for several rounds. 5.Easy to Assemble: The wind driven generator model toy comes with independent parts before the assembly. To get a finished model, assembly is required and the work is easy, even can finish it independently.