GM knows you’ll be skeptical, says Gary Cowger, but this icon of American business has committed to transforming itself via a comprehensive regime of environmental sustainability. Cowger offers proof of the corporate giant’s efforts to date and even more ambitious plans for the future. From its headquarters in Detroit, to 185 manufacturing sites around the world, to the cars and trucks people drive out of a dealership, GM sees “environmental sustainability more and more ingrained in our operating culture every day.” Cowger says employees in every plant, in every language around the world must embrace environmental metrics along with safety and quality. This means, for instance, that GM is installing giant solar panels at sites in Europe and the U.S., in some cases, sending electricity back to the grid. It’s harnessing the energy of landfill gases to fire boilers and generate electricity. There are water reduction and reuse initiatives in thirsty spots like Mexico, and habitat enhancement and restoration projects in North America and Brazil. What’s more, GM has pledged to eliminate all waste at its operations worldwide; to date, 43 facilities are landfill free (your bag of trash accounts for more waste than all these plants put together, says Cowger.) He projects that renewable initiatives will amount to savings in excess of $75 million within a few years. GM is pursuing a comparably diverse strategy with its cars and trucks, providing consumers with options to increase fuel economy, reduce emissions and “displace petrol.” In the next few years, expect more than 20 diesel engine variants, and biofuel-driven cars feeding on switchgrass, forest and farm residues and trash -- “the landfills we used to hate are becoming gems,” notes Cowger. GM is producing 20 versions of cars than can run on such flexfuels. The company is also developing a variety of hybrids, rear and front-wheel drive. The piece de resistance, what Cowger calls “the gamechanger,” will be the GM Vol...