Overview: Nine students from the University of Adelaide have designed and built an eco-friendly bio-diesel motorbike for their final year mechanical engineering project. With the help of their sponsors the ’BioBike’ team have demonstrated that bio-diesel can be used as a practical alternative to petroleum in a light weight application by developing and bringing together existing products and by applying engineering technology and know how to maximise performance. Biodiesel is renewable and therefore a sustainable energy source that is derived from plant oils and animal fats. While CO2 is still a pollutant it is absorbed when more fuel is grown. The use of Biodiesel is therefore far more CO2 neutral than fossil based fuels. While diesel motorbikes exist, the team believes that this will be the first time an agricultural bike has been specifically designed to run on biodiesel. An agricultural bike platform was chosen to appeal to farmers who may grow feedstock for biodiesel while also favouring the idea of using a single fuel on their property. The BioBike will be developed over a two year period (2006 and 2007) and will be shown at various media launches and events. A working rideable bike has now been completed and further development throughout 2007 will result in a fully compliant road version. At the end of 2007 this road version will compete in the Greenfleet Class of the 2007 Panasonic World Solar Challenge (WSC). This is the renewable fuel category of the WSC and will demonstrate to a world wide audience the full potential of biodiesel applications in small engine vehicles. The team acknowledges and greatly appreciates the generous support of their principle sponsor Yanmar (Japan) and their gold sponsors Australian Farmers Fuels, The South Australian Research and Development Institute, The South Australian Department of Trade and Economic Develepment and The South Australian Department of Primary Industries and Resorces.