Sustainability is on the minds of the heads of the largest publicly traded corporations, particularly as green initiatives relate to product development and energy usage, Exel executives say. But less than 25 percent of those companies have actually implemented green programs. Exel has found that sustainability is evolutionary, not revolutionary, but it is here to stay. Consequently, the provider is dedicated to helping clients optimize transportation programs, improve energy management and recycling efforts, and begin incentive programs for employees. [Run Time (Min): 9:07]