Spyker, the Dutch supercar firm and owner of Saab, hit General Motors with a $3 billion lawsuit Monday, claiming GM forced Saab into bankruptcy and interfered with a potential deal with Chinese investors that could have saved the company. Spyker is suing on behalf of Saab, assuming legal costs in exchange for a significant proportion of any potential award. Saab went into bankruptcy in December 2011. The lawsuit also says GM interference prevented an agreement with Chinese investor Zhejiang Youngman Lotus Automobile Co. Ltd., which would have allowed Saab to restructure. In court papers, Spyker said GM's motivation was to...