Ol' Larry, you've taken it way further than I ever imagined....I'll bet you are much more able to visualize probable aerodynamic outcomes because of the experiments you've done with corn starch and colored water. If I felt it was possible to rig up a poor mans' wind tunnel to test up to 250 mph, I might be interested. I imagine I'll need to live closer to 3 phase, 480 volt power and get me a 25 ton air handler unit, though.