Thanks to gyros, accelerometers and sophisticated control mechanisms, remaining upright on a two-wheeled vehicle is no longer quite the balancing act it might once have been, even when at a standstill. Visions of future mobility like Honda's U3-X take such ideas in whole new directions, quite literally, by including multi-directional capabilities, and concepts such as Supple go even further still by ditching wheels altogether in favor of balls. It's this freedom of movement that inspired a group of students from the Charles W Davidson College Of Engineering at San Jose State University to begin work on the ambitious Spherical Drive System (SDS) electric motorcycle.