I do believe that I posted up there somewhere that the VG's did nothing for FE, or anything else for that matter. I just figured since I already had the darn things, I might as well try them out. Stupid idea?... Maybe. Does it matter?... No.
True Story....
However, the other morning there was a road crew along side the highway with those big concrete circular saws cutting up some pavement. There had to be a few of these guys going at once as there was a large white dust cloud rolling over the highway. As I was going through this cloud of dust, I just happen to look in my rear view mirror so I could get in the next lane when I noticed EIGHT very thin streamers coming from the top of my Cube that looked like they dropped down below the roof line by a few inches. So with that, they are in fact doing something back there.
Maybe what I need to do with my Cube to improve FE is throw a boat tail on the front of it!