President Obama released a memorandum on federal fleet performance May 24 that requires all new light-duty vehicles purchased by the federal government to be powered by alternative fuels by the end of 2015. The Government Services Agency will also be required to determine the optimal fleet size for all federal agencies within 90 days and provide agencies with recommendations for alternative-fuel vehicle acquisition and fleet optimization. The GSA announced a pilot program in conjunction with the memo to incorporate electric vehicles into the federal fleet; it has purchased 116 electric vehicles and will install charging stations at federal buildings in Detroit, Los Angeles, San Diego, San Francisco, and Washington, DC.