Listen carefully and you might hear the slight whir of its motor, the hint of wind noise and a faint thrum from the tires. Think whisper, that's how quiet this minicar is.
Could this be the sound of future driving? If Mitsubishi has its way, then this Mitsubishi i MiEV - a test bed for an electric vehicle scheduled to be introduced for 2010 - makes a pretty strong case for it.
This particular car is one of a 30-vehicle test fleet that's running around Tokyo right now.