The price tag is mind-numbing--and Bonhams claims it's a record for a car sold at auction, for any F1 car sold, and for any Mercedes-Benz sold. In 2011, a 1957 Ferrari 250 Testa Rossa sold for $16.4 million, a record at the time.
Fangio's W196 isn't the most expensive car sold, however: a private sale in 2012 saw a 1962 Ferrari 250 GTO raced by Stirling Moss sold for $35 million.
Wearing chassis number 00006, this is the actual car that Fangio drove to his first F1 victory for Mercedes at the German Grand Prix--on the 14.2-mile Nurburgring Nordschleife circuit. Fangio also won the Swiss Grand Prix in the car.
Also driven by Mercedes-Benz racers Hans Herrmann and Karl Kling, this Silver Arrow featured some of the most advanced automotive technology of the time, as you'd expect in an F1 car, including: a fuel-injected engine; tubular spaceframe chassis; inboard brakes at all four corners; Desmodromic valve actuation; and a unique central power take-off from the in-line eight-cylinder's crankshaft to minimize vibration.
For more from the 2013 Goodwood Festival of Speed, click here.