Google sketchup

[shafe88]

I made a car in google sketchup 8 and wanted to know if their is a way to test the aerodynamics or if their is a plugin that lets you do this.

 

[hang-the-9]

You need a much more specialized software than sketchup to do wind tunnel testing in software, past hobby level.

http://www.microcfd.com/software.htm

http://www.physicsforums.com/showthread.php?t=133939

 

[Rusting In Peace]

Just like hang-the-9 said.

And unfortunately I don't think you are going to be able to export that car design - at least not in one step into other 3D modeling tools that also support physics testing.