"It's amazing to know that the car had been there all those years without anyone knowing about it." During the fifties, the Stuttgart-based factory turned out 29 lightweight alloy body gullwing coupes fitted with Plexiglass windows. These represent some of the most valuable cars in the world today, and are valued at $2.5 million apiece. Having gotten whisper of a rumor that the last of these rare specimens was stored in a garage in Santa Monica twenty years ago, it was with an overwhelming sense of pleasure that Koniczek tracked the car down this spring.