See also the Volkswagen 1L concept series, which is supposedly targeted for eventual production. It is a 2-seat inline design, and I think a better one. It is a little wider for side-impact protection, and doesn't need to lean. It is extremely simple and lightweight.
The name 1L refers to a fuel consumption of 1L/100Km, equivalent to 238 MPG!
This Nissan looks cool, but it seems overly complicated and is probably heavier and less efficient than it needs to be due to the tilt actuators. Also, how do you wash inside the fender gaps?