3. Rolls-Royce Sweptail: $13 million

The tapering rear end of the Sweptail is its distinguishing characteristic and nickname; it appropriately evokes a boat and the impression of sheer joy and elegance that only a Rolls-Royce can provide.
The Sweptail is priced like a yacht because it has a glass roof that stretches from front to back and wood and leather on almost every interior surface.