General Motors expected to report fall in profits
General Motors, which last year regained its position as the world's largest car maker, is expected to report a drop in quarterly profits.
The firm's biggest problem is its business in Europe which is losing money.
However, this week GM reported a 6% slide in July sales as high US unemployment and weak consumer confidence kept would-be buyers on the sidelines.
So is GM's revival under threat?
Mark Gregory reports from New York.