To reduce carbon emissions from transportation they use vans powered by bio-diesel inside London and even claim to use boats on England's network of canals to transport produce from outside the capital.
The automakers said they can make half of their vehicles ready to run on ethanol or bio-diesel by 2012, but said their efforts should be matched by incentives to encourage the production and availability of renewable fuels.
Liban Egal, a Somali entrepreneur who grew up in Baltimore in America, has started work with an American-trained chemist to produce bio-diesel from animal fat, which the cattle-herding Somalis normally have in abundance, along with used oil and chemicals.