6. Mazda MX-5 Miata’s Pop-Up Headlights

The original Mazda MX-5 Miata’s pop-up headlights were the result of late-stage regulatory confusion, leading engineers to adopt the quirky feature at the last minute. This unplanned decision gave the Miata its now-iconic, playful look, instantly recognizable among enthusiasts. The pop-up headlights not only enhanced the car’s charm but also helped cement the Miata’s place in automotive culture. Their legacy endures, in part, thanks to this happy accident. See Jalopnik.