Added another minor aero tweak. I took a page out of Aptera's book and installed ducts to exhaust my cabin air into the small low pressure eddy behind the license plate. I doubt I will notice any difference in mileage, but every little bit helps and it should help to move the cabin air with less fan assist.
Vent holes at back of cargo area.
Other end of ducts opening into area behind license plate.
License plate installed with 1/2" gap behind plate.