Classic example of "flex fuel" in use is in Brazil - over 70% of cars sold have duel/triple fuel options.
The main fuel being ethanol which is cleaner and cheaper than oil - a no brainer.
At the rate Brazil has backed alternative energy sources like this - their requirement for oil in 10 years will be peanuts - and a massive plus on trade balances.
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XXX TLD's - Another mosquito to swat.
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