GM sells nearly three million vehicles a year through its U. S. dealers, so every $500 of incentives above the industry average represents $1.5 billion in lost pretax profit.

通用每年通过美国经销商销售近300万辆汽车，因此，促销费用较行业平均水平每高出500美元，就意味着它要损失15亿美元的税前利润。