A Thai policeman carries cans of used cooking oil at a restaurant in Bangkok on November 14, 2007. Thai police have put out an all-points bulletin for used cooking oil to fuel its patrol fleet as ballooning oil prices eat away the annual crime-fighting budget. Anyone is welcome to contribute a source for biodiesel, from large food processing plants to roadside fried banana stalls. REUTERS/Sukree Sukplang (THAILAND)