Like a stripped-down Segway, Inventist's new Solowheel is geared for the mobile urbanite. The "self-balancing electric unicycle" operates through gyroscopic technology, which a 1000-watt rechargeable lithium-ion battery powers. On a full charge (which takes about 45 minutes), the Solowheel lasts two hours—but the battery actually recaptures energy when going downhill.
Weighing only 20 pounds and consisting of little more than a simple wheel with a fold-up foot platform on either side, you can easily throw it in your backpack or briefcase once you reach your destination, or carry it by its convenient handle.
Solowheel will be available stateside March 2010 and will sell for $1,500.