http://www.businessweek.com/magazine/content/08_21/b4085036665789.htm
General Motors’ green strategy is akin to a moon shot. It will cost billions to get the Volt ready by 2010 and fill out the fleet with hybrids, require GM’s 22,000 engineers to stretch like never before, and involve the top-to-bottom transformation of a culture wedded to big cars and horsepower. Other automakers, of course, must also hew to the new realities. Most, including GM’s two crosstown rivals, Ford and Chrysler, are rolling out hybrids, too. But the Volt is controversial in automotive circles because the technology is so new and unproven. And GM, bleeding cash and losing money in North America, is at a serious disadvantage compared with well- financed Toyota.
See also: GM-Volt blog - http://gm-volt.com/