us department of agriculture afv program report for fiscal year 2006 the united states usda alternative fuel vehicle fy presents s data on number vehicles afvs acquired in and planned projected acquisitions 2007and 2008 has been developed accordance with energy policy act 1992 epact 42 usc 13211 13219 as amended by conservation reauthorization 1998 public law 105 388 ecra executive order 13149 greening government through federal fleet transportation efficiency dated april 2000 legislative requirements required that 75 percent all covered light duty fleets 1999 beyond must be where have 20 or more are capable being centrally fueled operated a metropolitan statistical area msa population than 250 000 based 1980 census certain emergency enforcement national defense exempt from these to allow one