Orbis EV Challenges the Segway's Domination of the One-Wheeled EV Market

The Segway hasn't been the runaway hit that inventor Dean Kamen hoped--only 50,000 have been sold in seven years--but that doesn't mean there isn't room for a little healthy competition. The Orbis, a one-wheeled self-balancing urban mobility vehicle, uses gyroscopes (like the Segway) to stay upright and generates power from a lithium ion battery and internal hub motor.

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