It's called the Leaf Nismo RC, and the reason this thing looks so good is because the only things shared with the road car are the lights, motors and batteries. It is designed to be a replacement of the old Leaf Nismo RC except the new one had a much better starting point (Pictures of old Leaf below). Nissan has used the same strategy as Ferrari here, they've taken a decent car and put it on steroids (Just like a Ferrari FXXK/LaFerrari), but the purpose of the Nissan is to just like the old car be an example of seeing how far Nissan push it's standard road car tech. It has't been racing just yet but I sure can't wait until it does.
It features new a Nismo front splitter, rear wing and side skirts, it's rather obviously been lowered and the arches have been flared right out. A racing style livery and tiny mirrors finishes of the job of making a Leaf look like FXX K.