At first glance, the illustration looks like a perfectly ordinary American diner from the early 1960s. There’s a smiling waitress pouring fresh coffee for a customer seated at the counter. Red vinyl stools line the bar, a classic jukebox stands proudly in the corner, vintage portraits decorate the walls, and steaming coffee cups sit neatly on the countertop. The scene captures everything people associate with the golden age of roadside diners.
But hidden somewhere in this nostalgic picture is one detail that doesn’t belong.
Can you find it?