A search for:' New Audi e-tron GT tested in the wind tunnel-has crazy aerodynamics' will bring up a video.
The smoke streamers are very 'nervous'.
The streamline closest to the rear upper body indicates cyclically attached, then separated flow, as if at sub-critical Reynolds number.
Nasty!
It's probably a very good thing that it has the rear wing.
When COVID's over, I'll find a 4-year-old to instruct me on links. Sorry!
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There's also a video following, which shows a brief glance of a the Genesis G-70 in the wind tunnel.Flow over the boot doesn't look so good either.