The Blue Ridge Parkway is implementing a sustainable fleet initiative to reduce its environmental impact and fuel costs. It will optimize its vehicle fleet, purchase hybrid vehicles, establish no idling rules, track fuel usage more closely, and explore using alternative fuels to meet federal mandates. The 2010 energy audit found gasoline and diesel powered vehicles contributed most to the Parkway's carbon emissions and fuel costs. The initiative aims to decrease exhaust emissions and increase fuel efficiency through targeted changes to the Parkway's fleet and fuel management.