MFC-02 has got a built-in ESC, Light show, Sound-Music, and Vibration System for Ultimate Scale Show Rig. I got them on both F350 and Tundra, and add a lot of weight, for sure. Definitely an attraction, and Work GREAT for indoors/outdoor flat surfaces. Best used with a 4-channel stick controller and NIMH or Tamiya LiFe packs.