... applicable confine: Park, Plaze, Amusement Park, Tourist Attraction. Electric Vehicle, Electric Scooter.The applicable confine: Outdoors: Park, Plaze, Amusement Park, Tourist ... Museum, Aiport,Shopping center.Special functions: For people who Can't tread for along time or actions inconvenient Substitute tread.Simple ... , left to the next generation of cleaner Earth. Electric Vehicle, Electric Scooter