Frankly, standardization is often the only option given the limits of a universal technology standard. 1  1. Standardization lag: It takes time to understand a problem domain well enough to make a proper standard.
A flexible-fuel vehicle (FFV) or dual-fuel vehicle (colloquially called a flex-fuel vehicle) is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank.
To find out if your car can run on cheaper flex fuel, check your ownerâs manual or look for an E85 label on the fuel door , a yellow gas cap or a badge on your car with the term âE85,â âFlex Fuel,â or âFFV.â.