That's the heavy duty commercial model
The Post Office is expressing interest in that model, as are some other government agencies and some commercial outfits. I can see them possibly replacing some of those little utility vehicles used in large factories.
The consumer model is supposed to sell for $3000. Like I said below, I don't see myself buying one because of where I live but others might find it useful. It'd sure beat trying to drive a car in downtown traffic and paying absurd amounts for parking.