MIT have been hard at work developing a solution that's kind on the planet and your scrawny legs. A team called Smart Cities have designed a small, two-seat, electric vehicle -- which they call the City Car -- that can be "stacked" in convenient locations (say, just outside a subway stop), and then taken on short trips around urban areas. The cars -- which are based around an omnidirectional "robot wheel" that encases an electric motor, suspension, and steering -- can be "folded" and attached to a group of other cars for charging. The lineups of rentable vehicles would be accessible from various points around a city, with six or eight cars occupying just a single "regular" car space. Of course, you'll have to forgo your 24-inch rims... but that's life.
[Via Technology Review]