Long before he retired from the U.S. Postal Service, Thomas Greenfield went to the Aero Chevrolet dealership in Alexandria, Virginia, and purchased a white-over-blue 1960 Sport Impala two-door hardtop ...

This is a 1960 Alfa Romeo Giulietta Sprint Zagato, which in itself is rare, with only 213 examples built over three years.

From limited production runs to unique designs, rare cars have a special allure that attracts collectors and enthusiasts ...