Wall Street extends losses amid auto anxiety
* JPMorgan Chase is the Dow's heaviest weight, falling more than 7 percent after the chief executive told CNBC that the December quarter so far has been "terrible".
* The Dow Jones industrial average fell 141.45 points, or 1.61 percent, to 8,619.97. The Standard & Poor's 500 Index was down 16.57 points, or 1.84 percent, at 882.67. The Nasdaq Composite Index gave up 37.74 points, or 2.41 percent, at 1,527.74.
(Reporting by Leah Schnurr; Editing by Jan Paschal)