He Liangcai is a Chinese farmer turned inventor, who now builds fully drivable motorized scooters/suitcases. Basically a suitcase with wheels that goes up to 20 km/h (12 mph).
The idea is not too bad. Big airports are bigger than small towns and it takes time to get from one gate to the other. What if you could just sit on your suitcase and slowly cruise to the nearby bar and then to the next gate?
Not sure would airports allow such suitcases to be used as scooters, but it sure would be fun to race them, when bored and waiting for the next flight. See the video below to hear what the inventor has to say about his creation.