Being "green" can save green in many ways, and today's fleets are recognizing that big results can be seen with relatively little effort and comparatively easy-to-implement changes. In fact, many operations may already be green and not even realize it. If customers recognize the value of an environmentally friendly approach to business, imagine how your employees -- both current and potential -- will feel. For Old Dominion, maintaining clean environment is the key to a green environment. Cleanliness and safety go hand in hand, and the payback isn't only on the shop floor but in the community. A large part of being a good neighbor when you're a trucking company is careful management of hazardous waste. Even more savings have been realized with the simple process of saving the fuel from each fuel filter or fuel-water separator change.