It has almost become a detective story. General Motors group changed its mind five or six times in a diametrically opposite way. Factory workers, the Government of Germany… and common sense were in favor of selling Opel to a Russian Savings Bank and Canadian Magna. Since the American auto giant became unprofitable, it is supposed to sell some part of its empire in order to save the rest. But in fact the behavior of GM was like a dog in the manger in Lope de Vega comedy: it can’t use it and won’t give it away to the others. But it happened, the squeeze worked out. Why did then GM resist so much, why was it reluctant to sell Opel to an investor ‘made in Russia‘?