Corradino D’Ascanio 意大利發明家-直升機.變槳推進器.Vespa機車

Researchers, historians, engineers, friends, and relatives describe the ups and downs of Corradino D’Ascanio, the man who invented the helicopter, the variable pitch propeller, and the most famous scooter in the world: the Vespa. This is the most accurate portrait that has ever been realized about this world-famous engineer. Italian with English subtitles.