5. Porsche 916 – $3 million
When you think of Porsche, the 911 comes to mind. However, mention Porsche to collectors and they will tell you all about 916. It is one of the rarest cars today, and only 11 prototypes were assembled in 1972. One of these was shipped to the US, and it is now at the Automobile Atlanta Museum in Marietta, Georgia.
