During the 1970s, Ferruccio Lamborghini's companies began to run into financial difficulties. In 1971, Lamborghini Trattori, which exported around half of its production of tractors, ran into trouble when its South African importer cancelled all its orders. In Bolivia, the new military government, which had recently staged a successful coup d'état, cancelled a large order of tractors that was being prepared for shipment in Genoa. Trattori's unionised employees could not be laid off, putting immense strain on the company. In 1972, Lamborghini sold his entire holding in the company to rival tractor builder SAME.Soon, the entire Lamborghini group found itself in financial trouble. Development at the automaker slowed as costs were cut. Ferruccio Lamborghini began courting buyers for Automobili and Trattori, entering negotiations with Georges-Henri Rossetti, a wealthy Swiss businessman and friend. Ferruccio sold Rossetti 51% of the company for US$600,000, thereby relinquishing control of the automaker he had founded. He continued to work at the Sant'Agata factory; Rossetti rarely involved himself in Automobili's affairs.