Hey all,
I have a video I uploaded for you to see. I cut a makeshift vortex generator (not sized, angled, or located properly). The footage taken wasn't placed in the same position for a good comparison. I take a lot of angles to see what is happening with the tufts and I ran out of time (because of the rain) to view the video and reposition the camera for comparison footage.
Remember the vehicle is traveling at 60 MPH in BOTH videos. The tufts are NOT moving at 60 MPH in the first video... in the second video, look for the vortex generator and the swirling air directly behind it. Then look further downstream. Perfection
... Then look to the right which is the the same as the first video.
Also... stick with the video as long as you can. During the VG portion I stop and turn around. You can see the flow attaching fast the rear.
Enjoy!