Ok, so it tapers in too quickly...would it actually be better off as a hatchback e.g. no taper at all? I know even some hatchbacks get about 0.3 CD.
And I think I see what you mean about the sides. As in they push air up, only to curve into an area where it's quickly pulled down a bit, thus causing a vacuum/turbulence area? How much CD would you guess that issue alone costs and what's a good way to fix it (simply keep sloping upward and very gently start curving downward to meet the very side/tail area)?
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