Most Brazilian cars can run on a mixture of ethanol and petrol, thanks in part to the flex-fuel engine, developed in the country.

ECONOMIST: Schumpeter: The Brazilian model | The

The flex-fuel engine--prized because it uses a renewable resource that reduces dependency on traditional gasoline--on the Cherokee was even worse: three out of 10 and one out of 10 for the air pollution and gas emissions, respectively.

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