SACRAMENTO - In an effort to study plug-in hybrid electric vehicle (PHEV) performance, the California Department of General Services will take part in a two-year experiment to determine the benefits of driving PHEVs.

Funded by the California Energy Commission, the study will involve 50 converted Toyota Prius vehicles and will examine data related to automobile performance, what efficiencies are gained, and how much greenhouse gas emissions can be reduced.

With more than 50,000 vehicles in the state motor fleet, the study will help determine California's potential to make the move from gas to hybrid-electric vehicles.