A mkokoteni driver with his vehicle is trying to pass a car congestion. As he finds himself in dead end, he uses the wending capability of his two wheeled vehicles and turns over using very little space. This manouver makes it possible for him to move further and to search another route while the motorized vehicles have to wait until the traffic jam dissolves.
We see maybe the main advantage of two wheeled vehicles with one axis which is the turning-over at a place.The mkokoteni drivers seems to have a much more precise speed and turning control because both are transmitted almost directly without mechanical indirection therefore requires enourmous muscular strength.