Amilcar C6 berline Amilcar CGS Ariès coach Auto Union cabriolet Avions Discovered $18 Million Worth Of Classic Cars In Epic French Barn. Old Rusty Cars Expected To For 20 Million Cnn Com. 18 million cars in french barn business insider 18 million cars in french barn business. The Ferrari GT SWB is one of 36 ever made and one of 60 classic cars discovered rotting away and forgotten on a farm in western France. Collectors stumbled upon an exceptional discovery tucked away in a barn in western France -- a treasure trove of historic vehicles from Ferrari. Every car collector dreams of uncovering an amazing barn filled with perfectly preserved classic cars. And for two "motorcar specialists" from. Classic cars abandoned for decades in French barn valued at $20 million. Jake Wallis Simons, for CNN. Updated PM ET, Fri June 26.