[JohnForde]

Thank you everybody!
I appreciate the 'rounding' idea, but I need access to the door.
Here is an idea. Increase door angles to 16 degrees. That leaves an aperture or wake area 36" wide. Tuft test.
Then fabricate a detachable cone as shown. 100% polycarbonate Twinwall. Under 10 lbs.
Length is now 108" behind bumper but I can move the tail lights easily to within 48" of the rear tip. Aperture is rounded and now 12" W & 36" Tall.
Fine for highway. Very tricky in a parking lot.
Still square to 66" behind bumper but rounding the final 44" or so.