I find it believable because the venerable Beetle, with it's external rain gutters, approximates the back half of the Cybertruck. Whether the front edges, in a positive pressure gradient, would perform as advertised is an open question. aerohead's 'trip strip' might be more 'to the point'.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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