Flex for flexibility

Flex cars are cars that run on gasoline, gasoline diluted with alcohol, pure alcohol (E100) or even propane.  Brazil has millions of flex cars on its highways and a good many are new from American car companies.  Here is an example (click on the picture to see the American version).

 Find out if you already own a flex car. Link to Directory
General Motors' first plug-in hybrid, the Chevrolet Volt concept, introduces GM's new family of electric-drive propulsion systems

The "flex" in the E-flex name stands for "flexibility." GM promises more concepts using the E-flex system will be unveiled at future auto shows. The automaker hints those could incorporate diesel generators, biodiesel and pure ethanol or E-100.

GM engineers have designed the E-flex system so it can be tailored to meet the specific needs and fuel infrastructure of a given market. For instance, the E-flex system might use 100-percent ethanol in Brazil. In Sweden, it might use biodiesel made from wood.

The E-flex system uses common drive components so it can be adapted to a variety of chassis and vehicles.

E85 is a start but E100 is the way to go... E100 burns any fuel in any combination!

E-85 vehicles have been designed for versatility. They will operate with unleaded gasoline or any mixture of gasoline and ethanol up to an 85 percent  concentration. A key component in all ethanol vehicles to date is a sensor which  determines the percentage of ethanol in the fuel, optimizes performance and adjusts emission control devices.  Source: Click Here