That is a nice write up which covers the MUCH safer 2 wheels up front side by side version. The one wheel up front is very inferior, it can be made to flip on command like telling a trained dog to roll over.
Here is the you-tube vid of Top Gear putting it through the wringer:
My favorite was the ugly but somehow appealing "Worlds smallest" also on Top Gear. Really liked it when instead of looking for a parking spot once he got to work, he just took it up the elevator and parked it beside his desk!