On my panel van I had two [approx. 2.5x4"] rectangular convex mirrors . The rear window was about the size of a piece of legal-sized paper.
Objects 100 yards behind were visible, but very small. Peripheral vision and situational awareness were good.
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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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