5. Chevrolet Corvette’s Split Rear Window
The 1963 Corvette Sting Ray’s split rear window was originally an unintentional engineering compromise, created due to design disagreements within the team. While it was criticized at first for obstructing rear visibility, its dramatic, futuristic look quickly won over car enthusiasts. Over time, the split window became one of the most distinctive and collectible features ever seen on a Corvette, symbolizing both boldness and rarity. More at Corvette Museum.