There are a number of technologies that when implemented can help your fleet save on fuel costs and help your company attain “green” status.
You can, for example, retrofit your fleet with hybrid systems, which may be more economical than replacing your fleet with hybrid vehicles. With the continued fluctuations of fuel prices, it is still very important to find new ways to reduce these costs, as well as help reduce carbon emissions and protect our environment.
Retrofitting your vehicles with hybrid technologies, however is not the only way to reduce your carbon footprint. You can also implement a GPS Fleet Tracking System. You may not have thought of a GPS Tracking System as a way to reduce your fuel costs, but monitoring the locations of your vehicles, their idle times, and the drivers’ behavior, such as aggressive driving, can result in considerable fuel savings.
Source: http://cleantechnica.com/2013/01/11/technology-to-make-your-fleet-greener/