HORSEPOWER & SASS

The first car horn melody was “Happy Birthday.” It changed after drivers showed their true nature.

✗ FAKE
This is a joke. Early car horns were bulb horns that made a honking sound, and later electric horns made a single tone. They did not play 'Happy Birthday.'

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The first car horn melody was “Happy Birthday.” It changed after drivers showed their true nature. | SmartAss Facts