An eco-friendly bus was put into use in the city of Westminster, London on Monday. “YOUR COFFEE CAN NOW HELP POWER BUSES” was printed on the side of an iconic red double-decker bus. /Chinanews Photo

Oil extracted from ground coffee waste will be added to fuel tank of the bus, announced energy giant Royal Dutch Shell and British start-up technology company Bio-bean. /Chinanews Photo

The Royal Dutch Shell and Bio-bean fuel is made up of 80 percent of traditional diesel and 20 percent of biofuel. /Chinanews Photo

The final mix provides an ecological and sustainable solution for London buses by reducing emissions. /Chinanews Photo

The eco-friendly bus ran on London’s Waterloo Bridge on Monday. /Chinanews Photo