General Motors has announced an initiative to develop a line of hybrid vehicles that use less gas and more electricity. In part to catch up to hybrid leaders Toyota and Honda, and in part to build its image as a "green" company, GM says it will develop "plug-in" hybrid technology over the next several years. As the name suggests, plug-in hybrids plug into a regular electrical outlet to charge, and have more powerful batteries than regular hybrids. However, economical batteries are still under development, and GM might not have a marketable plug-in hybrid vehicle until the end of the decade.
Source: Washington Post