A oil and derivatives will always remain the only energy source to be used in motors.
B sugar-cane based ethanol is efficient as fuel for cars, but cannot be used to generate electricity.
C the consumption of ethanol is expected to drop in the future – 2006 was a historical exception in energy demands.
D the production of oil has boomed after 2006, as a result of the historical tendency for the manufacture of exclusive petroleum-driven motors.
E it was important that Brazil be able to supply all its needs in generating energy, with renewable fuels like ethanol, hydroelectric power and petroleum.