One of Detroit's Big Three could be on the chopping block, or at least one of its flagship brands.
That's according to the latest in the automotive news rumor mill, which suggests that Fiat-Chrysler CEO Sergio Marchionne could be planning to kill Chrysler. On Wednesday, Automotive News reporter Larry P. Vellequette wrote that "a source told a European colleague" that Marchionne would announce the end of Chrysler in a speech to investors in Italy on Friday.…