Robert Bigler's Hoverboard is a one-wheeled skateboard
Segway - Ninebot by Segway - One S2 - Hoverboard - Self-Balanced Robot - Electric Wheel - Avvenice
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Self-balancing scooter - Wikipedia
self balancing unicycle for Better Mobility - Alibaba.com
Magic Hover HS300 One Wheel Hoverboard Gyroshoes Electric Roller Skate, Self -Balancing Hover shoes with LED Light for Kids and Adults - Walmart.com
Hot Item] Big Tire One Wheel Hoverboard Electric Self Balancing Unicycle (E6) | Self balancing unicycle, Unicycle, Electric skateboard
Comfortable One-wheel Transporter Portable Electric Unicycle Scooter 14" | eBay
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The Onewheel: A Self-Balancing Electric Monowheel Skateboard - Core77