Ferrari 575M Superamerica Estimated to Fetch Up to $900,000 at Auction

After the Testarossa of the 1980s, the Prancing Horse launched a fundamentally different flagship in the form of the 550 Maranello. Five years of production later, Ferrari morphed it into the 575M Maranello, a grand tourer that spawned a special edition christened the Superamerica. This is o…