A student at the Massachusetts Institute of Technology has created an 'almost self-balancing' electric unicycle which he uses to zip around the MIT campus.
However, the key word here seems to be 'almost' because while users lean to control their movement like on a Segway, the electric unicycle is not quite as easy to master.
Inventor, Stephan Boyer, says it even took him several hours (and several crashes) to be able to ride in a straight line... and it was days before he mastered turning in a controlled manner.
It's claimed this is because while the device automatically self-rights if it tips too far forward or back, it can still fall over to the side.
Writing on his blog, Stephan said: "Unfortunately, one cannot simply pick up a self-balancing unicycle and ride it with ease. Many of my friends have tried riding it, usually with little success."
He added that he currently uses the device -- dubbed 'Bullet' because of its 15mph top speed and 5 mile range -- to navigate MIT and the surrounding Cambridge area.
"I often zoom past students, faculty, custodians, and tourists, with generally positive reactions from everyone," he added.