zlacker

You just need an Ethanol sensor + a little bit of software support in the ECU and your hybrid car can also run on ethanol, gas or electricity. However for some reason OEM manufacturers are just not putting the ethanol sensor into cars.

>>genera+(OP)
Does it require a $18.5 million investment (from article) from each manufacturer?

>>aitchn+M4
It does not. Flex fuel cars are widely used South America, especially Brazil where Ethanol is more available than gas. In North America or Europe it depends. Sometimes it is available directly from OEM, sometimes you need aftermarket modification to add Ethanol sensor to run engine with correct lambda.

Here you have list of Flex Fuel cars - cars which has Ethanol sensor and are able to run on gas or Ethanol.

https://en.wikipedia.org/wiki/List_of_flexible-fuel_vehicles...