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Cruise Control Inventor Ralph Teetor was Blind

"Ralph Teetor was inspired to invent cruise control one day while riding with his lawyer. The lawyer would slow down while talking and speed up while listening. This rocking motion so annoyed Teetor that he was determined to invent a speed control device. In 1945, after ten years of tinkering, Ralph Teetor received his first patent on a speed control device.

Mr. Teetor became blind at age 5 due to an accident. "-Wikipedia

And to think, we thought Navigation on our vehicles was new!!

Turn-by-turntables: How drivers got from point A to point B in the early 1900s Long before GPS, drivers still wanted tech that could simplify the navigation process.