If you watched the video[0], it has 2 extra tires on a left side mount. Calling this a bicycle isn't even accurate. Tricycle is more like it, though technically looks like a quadcycle.
Tricycles have two wheels at the rear. This is more like having a sidecar on a motorbike (which we still call a motorbike - with sidecar), you can see the second seat on the outrider.