The Department of Energy and the National Park Service announced June 19 that five national parks will deploy fuel efficient and alternative fuel vehicles as part of an expanded partnership aimed at protecting America’s prized natural environments. Through the Clean Cities partnership, Shenandoah National Park, Blue Ridge Parkway, San Antonio Missions National Historical Park, Golden Gate National Recreation Area, and Mesa Verde National Park build upon the success of last year’s pilot projects at Grant Teton National Park, Mammoth Cave National Park, and Yellowstone National Park.