17. 1964 Ferrari 250 LM
Despite the name and the 3.0-liter engine, the 250 LM could not be considered a genuine part of the 250 Series because of two important details. First, it was introduced at the end of the production. Second, it was a mid-engined model with racing aspirations (via Bloomberg).

However, it never successfully raced. Only 35 were ever produced. But regardless of that, it managed to achieve a ludacris $67 million at the auction due to its highly-desired history and speed.