How does it work? There is a magnet embedded inside the racer. When the Mini Mighty Magnet is placed near the racer, it will attract the racer or push it away, depending on the orientation of the poles. Magnets have a north pole and a suoth pole. opposite poles attract and same poles repel. Magnetic force also works through a solid, so the racer may still be controlled by the magnet placed under the tabletop! For ages over 5 years. Watch how a racer moves without electrical energy or a driver! Learn about the mighty power of a magnet and how it can be used to drive the racer.