The conceptual BMW Halbo is one tiny motorcycle. According to the designer, it only takes up half as much space as your average bike. It's got your standard wheel up front with a motor built into it, and the rear...
The Self-Balancing Unicycle (or SBU) by Focus Designs incorporates the same kind of technology that keeps the goofy Segway upright. It uses accelerometers and gyroscopes that allow the SBU to know which way is up and which way you're leaning....