You think so? - What's the problem? ALL Portuguese are European, NOT all Europeans are Portuguese, right?
Not all Portuguese are europeans.... there are still portugueses that were born in the African colonies. Just saying though, carry on.
Any citation on this? From what I remember they were always flex, even if sometimes you might have to manually adjust something.
Since you quoted wikipedia, there it goes: ethanol fuel in Brazil. To get the info in a glimpse, check for the caption on the first image of the section (the FIAT 147 one), and read on for further info.
But I know where your misconception comes from: only recently pure ethanol has been used. It was used both as solute and as solvent to gasoline. As a solute, up to 25% volume, it was used to reduce gasoline dependency; and as a solvent to gasoline it was used to help deal with cold start problems of the ethanol prior to electronic injection, but cars were classified as ethanol fueled or gasoline fueled, nevertheless.
All it takes is the first commercial project producing bio-fuel to start making money, then development work will drop the price of biofuel even as the cost of extracting fossil fuel will continue to rise.
Did you know that since the 1970's around half the cars in Brazil are fueled by ethanol produced from sugar cane? You would think that a demonstration this wide was convincing enough, but here we are still gargling oil.
God made machine language; all the rest is the work of man.