Shortie771 -
This may be a big thing for us, because all of the wind tunnel simulators I have seen have cost bucko bucks. In the past we have documented 3D model locations on the web.
When I go here :
CADspan :: 3D Printing Solutions
It *appears* that the plug-in is not the 30-day trial. When you use the plug-in during Sketchup sessions, does it say "X days left"?
I also think that the wheels on the model are "solid", so I think you are emulating wheel covers right now.
CarloSW2