The guy in this video below blabs on quite a bit but at the 6min 30 sec mark he starts showing his experiments. I was quite intrigued by what exactly was happening. then on a video down the line the show vortex generators on an airplane wing reducing the stall speed of the plane from 60 knots to 45 knots. definitely some serious aerodynamics going on with those little flaps. my intention is to incorporate these to improve airflow around the side of my car.