The technical and economical potential of biogas as a sustainable, inexpensive and environmentally compatible energy mix has not yet been fully exploited. This potential is huge! All fermentable waste is suitable as raw material when producing biogas: sewage sludge, biowaste, organic fertilisers and even previously unused plants and parts of plants. Many raw materials are available at virtually no cost and the 60% average proportion of methane produced makes biogas energy rich and viable as a CO2-neutral fuel for vehicle propulsion systems.