Велосипед XXI века уже в продаже.
Innovative Electric Unicycle -- Single Wheel EV !!! The Solowheel is the latest advancement in electric vehicles: an electric unicycle with gyro-sensors to help the rider maintain balance. Steer with your feet, and control your speed simply by leaning. Lean forward to speed up; lean backward to slow down or stop.
Externally, the Solowheel consists of a wheel and two foot platforms. Internally, the gyro-sensor inside the Solowheel detects angle changes to maintain balance. The Solowheel uses a three-axis accelerometer which senses falling acceleration caused by gravity. The motor is controlled, based on the signal from the accelerometer, to keep the vehicle balanced in the forward-and-backward dimension. The left-and-right dimension is controlled by the user's feet, in a manner similar to steering the front wheel of a bicycle. Because it's much easier to turn your feet than it is to turn your hips due to the smaller mass of your feet, it makes the Solowheel much easier to learn than a sitting unicycle.