The nose of any Tesla has been shaped using fluid dynamics to reduce drag. It is not a flat plate. Even slight continuous radius changing curves can dramatically lower aerodynamic drag. Thank the aircraft industry, NACCA, and NASA for pioneering studies in this area.Drag can't be any worse than the front end of my model Y. It's totally flat which mean the wind just bounces off. Put the blades there with air driving the turbine and being exhaled though some vent. So as the air passes through the fans turn generating electricity and passes on through. Way less drag than my Y flat front end