." >> hundreds of trillions of dollars in mortgages, student loans, credit card debt, nknancial derivatives and other financial products worldwide are tied to libor, which serves as the premier benchmark for short term interest rates. in short, the global marketplace depends upon all of us ryingus on an accurate libor. yet u.b.s., le barclay's before it, sought repeatedly to fix libor for its own ends. >> tom: the probe into the libor interest rate manipulation involves more than a dozen major financial institutions including barclays, bank of america, and so.,ete generale.ne >> susie: uncle sam may soon be exiting the auto business. the treasury department said today it will sell is remaining and controversial stake in general ms ors, in the next 15 months. as part of the deal, g-m willor buy back $5.5 billion in shares, and that will happen by the end of this year. g.m. stock revved higher on the news, climbing 7% to $27 a share. and, as suzanne pratt reports, some investors like the sound of an independent g.m. >> reporter: it looks like general motors may soon be hitting the road all by