Can be burnt as fuel, cleaner than petrol or diesel produces fewer pollutants.
Renewable resources, produced by yeast fermenting glucose. Sugar cane, corn, barley used as source of glucose.
Cars can be adapted to run on mixture of ethanol and petrol - gasohol. 10% ethanol, 90% petrol.
Using gasohol saves on crude oil - non-renewable.
Growth of crops means CO2 absorbed. Balances out CO2 produced when gasohol burnt.
Brazil has made extensive use of gasohol, most economically viable in areas with plenty of sugar cane (tropical countries) and not much oil.
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