Umm, no, the issue is how the air flows over the windshield. The air that strikes your windshield when traveling 40 MPH is only going 20-30 MPH at some obtuse angle. Understand that the air already pushed by the windshield slows relative velocity of the air ahead of the car. An air nozzle would be designed to remove laminar flow characteristics via pressure, velocity and spray geometry, effectively scooping under the water. Most of the velocity of air striking a windshield actual helps hold the water against the glass, but you don't see this until you break the velocity into parallel and perpendicular components to the windshield.
The ultrasonic approach the article speaks of operates because it bubbles the water off the surface of the windshield, breaking the Van der Waals bond and friction that is keeping the water from being pulled into the flow of air passing over the car.
Lastly, I was just throwing out an idea that has likely been tried using existing technology, possibly as far back as 40-50 years ago.