He Has “Speeditis” Mon, May 6, 1907 – 5 · The Daily Herald (Port Huron, Michigan, United States of America) · Newspapers.com
As you can see, the man’s offensive speed was 30 miles per hour. Speeditis seems to have spread since then!
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My grandfather got a speeding ticket for riding his bicycle over 5 miles an hour! I’d say this happened around 1910 or so.