In the search for reducing the dependence of transportation on cars, the modern automobile industry has changed into Biodiesel based cars. Biodiesel is made from agricultural wastes and soybeans. This is the earliest forms of alternative fuel sources that is being sought after as a potential alternative for vehicles which run on gasoline.
Biodiesel is a much green fuel than conventional gasoline, since it releases lesser exhaust gases. It has reduced the dependence on foreign petroleum sources for biodiesel. It can be made from multiple sources of biomass which will eventually lead to filling trash grounds. If there is shortage of biomass then plants can be grown specifically for this purpose domestically which can easily be converted into biodiesel by simple conversion methods. Not just plant sources, it is also manufactured by animal fats and animal and human excreta. Other sources of producing biodiesel is by depending on algae. Algae are being researched throughout the world for using them to replace petroleum. Algae utilize sunlight to produce biomass and require little space, carbon dioxide, and lots of water to grow. They are being engineered to produce longer chains of biodiesel so that the process of conversion is shorter. The best part about algae fuel is that it does not require fields to grow and can be grown anywhere. It has also been studied that biodiesel has the highest energy balance.
Any vehicle currently plying on the roads can be able to efficiently utilize biodiesel to run any conventional diesel based vehicle with little modification. Vehicles are coming off factory lines to be able to adopt biodiesel and reduce the dependence on fossil fuels. The only problem with biodiesel is that the difference in viscosity with the petroleum diesel which becomes a huge problem. This is the only area where fuel delivery times cause problems in conventional diesel vehicles.