well it sucks to the ground AND blows that air out the back, though the thrust is negligible. The answer to your question though is no. It is much more efficie

well it sucks to the ground AND blows that air out the back, though the thrust is negligible. The answer to your question though is no. It is much more efficient to push against the ground with the tire. In fact this sucking method is more efficient than a wing or other aerodynamic down-force devices. You might see the wing they have no go away at some point, as it was added to improve balance. Maybe they will figure out how to adjust that with the skirt or something.