General Motors may be only the first major automaker to join a coalition that wants to reduce greenhouse gases tied to global warming.

General Motors Corp. on Tuesday joined the United States Climate Action Partnership, along with 13 other newcomers that included Dow Chemical Co. and PepsiCo Inc.

The partnership, which now has 27 members, is an alliance of big business and environmental groups that in January told President Bush that mandatory emissions caps are needed to reduce the flow of carbon dioxide and other heat-trapping gases into the atmosphere.

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"Check out guys! We genuinely know that this is the hottest new trend, and we hop in, so that we may gain favourable PR from this silly market stunt. No, we still don't feel guilty over what we've done."