At the 1:40 mark, the "spoiler hole" at the rear roof plane works similarly to the slotted roof wing on my pickup truck.
First time one of these treatments appears to be a integral part of the car and not simply a tack-on. Probably just an artifact of their presentation, not sure what the production vehicle is going to look like.
Range anxiety is being countered with aerodynamics, it's about time this selling point is made public.