On the heels of the Sierra Club’s partnership with the Donlen Corporation to reduce environment-polluting carbon emissions in its Cool Cities campaign, the two organizations have recently announced a new Environmental Leadership Award. The honor will recognize a company that raises industry standards in carbon reduction and is being launched with Automotive Fleet magazine. It will be awarded this fall. Donlen and Sierra Club recently announced a partnership to provide vehicle fleet managers, as well as any one interested in monitoring their vehicle’s carbon output, with Donlen’s Carbon Calculator tool, at coolfleets.com. The innovation provides a full picture of carbon costs and economics related to maintenance, fuel consumption and emissions for specific vehicles. For example, the tool calculates that a hybrid vehicle can cost 22 percent less to operate, and emits 46 percent less global warming pollution over a three-year period, than the average mid-size sedan.