GM_Earning Release_Q2_08_Financial Highlights

This document discusses General Motors' use of non-GAAP financial measures in its earnings releases and presentations to analysts. It provides definitions and explanations for several non-GAAP measures including adjusted net income, adjusted earnings before tax, and managerial cash flow. GM believes these measures provide useful supplemental information for investors by excluding certain items management does not consider part of core operating results. However, the document also notes limitations of non-GAAP measures including lack of comparability between companies.