DETROIT -- The largest U.S. auto makers posted staggering losses on Friday, blaming a worsening global economic slowdown and linking their precarious fates to the hope of a government rescue. General Motors Corp. reported a net loss of $2.54 billion or $4.45 a share, for the third quarter, including special items. That compares with a net loss of $42.5 billion or $75.12 a share, in the third quarter last year. Ford Motor Co. reported a third-quarter net loss of $129 million, or six cents a share, compared with a year-earlier loss of $380 million, or 19 cents a share. But...