The OneOne is envisioned as a sort of lovable pet vehicle. ("Won-won" is a common Japanese imitation for the sound of a barking dog.) Besides being cute, it would also be a helpful member of the family. On its own, it could go fetch some groceries or take a child to school.
The OneOne would move itself along like a skater by alternately pushing out with each of its rear wheels. At high speeds it would lean back for better aerodynamics, but at slower speeds it could "stand up" for better visibility.
These days, you no longer have to choose between saving gas money and getting the ultimate in car safety. Here's a look at some cars that give you both. (more) 
The six-disc CD changer is already looking like an antique as cars are coming equipped with better ways to carry your record collection on board. (more) 
