those pics show a streamlined shape where the air can flow around it.
doesn't work when the volume of air allowed to go under the car isn't great enough to fill the void.
if they were really trying for slipperiness they would have applied the same shape as viewed from the top also.
That's a great point about comparatively less air going under the car.
The way the Aerotech tail is, would/(should?) still allow the over the top airflow to recombine with whatever airflow coming from the underside?
Then the question is how is the mass airflow with it's (relative to the underside flow)speed over the top combining with the lesser volume airflow from the underside and it's speed to create lift or downforce?
Sorry if I am not using the correct terminology, I am just curious.
I have also questioned why the Aerotech rear body section was not tapered more to a much narrower rear end as well.
Thanks!