General Motors is set to launch hybrid models in various segments, according to CEO Mary Barra, who spoke during the company's third-quarter earnings call. The decision comes as U.S. gasoline prices have climbed to $4.28 per gallon, up from $3.04 a year ago. Barra emphasized that the hybrids will be introduced in segments where GM already competes, including compact cars, midsize cars, and minivans, which the company currently does not serve. She noted that much of the current hybrid activity is concentrated in these segments, and the move does not require significant capital investment or engineering changes.