Across decades and continents, automotive designers have quietly refused to let their work be merely functional. Hidden inside headlights, exhaust tips, steering wheels, and door speakers are numerical codes, private jokes, wartime silhouettes, and even a child's sketch of a shark — each one a deliberate act of authorship embedded in a mass-produced object. These Easter eggs ask nothing of the driver who never finds them, and offer everything to the one who does. They are, in the end, a reminder that even industrial creation can carry the fingerprints of a human who cared.