9. Mercedes-Benz CLK GTR Super Sport
The Mercedes-Benz CLK GTR Super Sport is a legend among supercars, with only five examples ever built. Essentially a road-going Le Mans racer, it boasts a monstrous 7.3-liter V12 and exhilarating performance. Its rarity eclipses even the lauded SLR Stirling Moss, making it a centerpiece in any world-class collection. Owning one is like possessing a piece of motorsport history. Read more about this mythical machine on the Mercedes-Benz official site.