5. Mercedes-Benz 300SL Gullwing
The Mercedes-Benz 300SL Gullwing stands out with its iconic upward-opening doors and innovative engineering. Produced from 1954 to 1957, only 1,400 units were ever made, enhancing its desirability among collectors. Well-preserved examples are highly sought after, often achieving prices above $1.5 million at auction. Its blend of style and performance makes it a true automotive legend. [Source]