Hot Cars Built in Very Small Numbers

5. 1955 Mercedes SL Gullwing

The rarity of this first SL or "super light" model and its special place in Mercedes history was part of the reason for the $4.62 million auction price paid for one in 2012. Derived from an earlier racer, the 1952 W194, it was the fasted production car of its time with a top speed of 163 mph and 3-liter direct fuel injection. It also featured the unique gullwing doors. Only 1400 coupes were made over a half-century ago, but a fortunate decision to display the model in New York and European auto shows inspired demand for future SL models.