Ok, so I put a protractor to it and I got 24 degrees on the rear window. What you can't see is it's more bubble shaped. Water traces on the rear window would indicate that there is a good amount of air pushing the water off the window as it wraps around the sides, with very little to no air pushing the water down the middle third of the window, which I assume is because of the steep angle. I'm not going to be changing or adding to the rear window angle, so that might have to be dealt with some VG's. Anyhow, What about a little hitch mounted "carrier" the shape I have drawn, with an initial angle of 16 degrees coming off the trunk and bending down to 22degrees before being cut off. Just thinking about filling the wake with something... Is there any potential worth pursuing here? If there is, then it may be time for some tuft testing. If not, then I'll move on to other aerodynamic challenges....
Thanks for your help guys
