2005 California Public Resources Code Sections 25725-25726 CHAPTER 8.4. LOCAL VEHICLE FLEET

25725.  On and after January 1, 2006, when awarding a vehicle
procurement contract, every city, county, city and county, and
special district, including a school district and a community college
district, may evaluate and score fuel economy, in addition to other
life cycle factors, in choosing passenger cars or light-duty trucks,
or both, with the lowest life cycle cost.
25726.  (a) On and after January 1, 2006, when awarding a vehicle
procurement contract, every city, county, city and county, and
special district, including a school district and a community college
district, may require that 75 percent of the passenger cars or
light-duty trucks, or both, to be acquired be energy-efficient
vehicles.
   (b) "Energy-efficient vehicle" means either of the following:
   (1) A vehicle that meets California's super ultra-low emission
vehicle (SULEV) standard for exhaust emissions and the federal
inherently low-emission vehicle (ILEV) evaporative emission standard,
as defined in Part 88 (commencing with Section 88.101-94) of Title
40 of the Code of Federal Regulations.
   (2) A hybrid vehicle or an alternative fuel vehicle that meets
California's advanced technology partial zero-emission vehicle (AT
PZEV) standard for criteria pollutant emissions.