The world needs environmentally friendly fuels. Oil prices continue to rise. Oil becomes ever more scarce. Additionaly, emissions from fossil fuel are highly damaging to the enviornment. The car remains one of the largests sources of harmful CO2 emissions. In European countries such as Germany, Austria, France and Spain, more and more cars are driving on pure plant oil or biodiesel. In the Netherlands this is still rare. Diligent Energy Systems wants to change this.