I thought it was an ekranoplan type. It flew using ground effect. A cushion of air that built up under the wings when close to th ground. As there are many ekranplans flying the thing that would make this one unique, probably, would be if it were the only commercially available civilian version.
EDIT
Forget that. Just did some checking and I'm sure I'm wrong about this.
There should be a computer version of the old saying...
"Better to remain silent and be thought a fool then to open your nouth and remove all doubt"