Just pretend, the same way they do with the claims about the GTR's ~0-degree wing, and most all aero claims on street-legal cars.

Aero at street legal speeds is basically worthless and range-destroying. Many supercars don't have more aero than the Roadster, just go look at them, they usually either have no wing, like the Lambo Huracan, or a wing with virtually no angle of attack.