Fisker Automotive, the struggling government-backed hybrid sports car maker, on Friday terminated most of its rank-and-file employees in what sources said was a last-ditch effort to conserve cash and stave off a potential bankruptcy filing, Reuters reported on Friday. Fisker, which raised $1.2 billion from investors and tapped nearly $200 million in government loans, has nearly $30 million in cash on hand. Fisker confirmed in a statement that it let go about 75 percent of its workforce but did not specify the number of workers affected. It called the move "a necessary strategic step in our efforts to maximize the value of Fisker's core assets."