Electric unicycles came first already in 1970's. It had a mechanical gyro from airplane and analog circuitry. The Segway was totally lame concept and doomed by

Electric unicycles came first already in 1970's. It had a mechanical gyro from airplane and analog circuitry. The Segway was totally lame concept and doomed by those who knew things. One plan was to add some lateral correction to the unicycle to aid learning and safety. But it never happened for some reason.