Then there are the surface constraints. UNICA (the Brazilian association of sugarcane producers) states that only 1 percent of Brazil's agricultural land is used to produce ethanol, yet it supplies 45 percent of the country's fuel needs. UNICA also says that there's about seven times more land available from rough surfaces that can't be used for anything else, not to mention that they can plant different species of sugarcane which produce throughout the year.
Therefore UNICA's answer is "yes," ethanol is still a good alternative
[Source: El Mundo via Madrid+d]