NOVELTY - An efficient and environmentally friendly ternary transportation flex-fuel mixture comprises: gasoline (at least 10%), bioethanol (at least 10%) and methanol (at least 45%). The total amount of gasoline, bioethanol and methanol is 100%. The flex-fuel mixture has an octane rating of at least 90 and remains homogeneous in the presence of up to 10% water in it.    USE - As an efficient and environmentally friendly ternary transportation flex-fuel mixture (claimed).    ADVANTAGE - The ternary transportation flex-fuel mixture is efficient and environmentally friendly, and includes the methanol which avoids emitting carbon dioxide into the atmosphere, and reduces the contribution of the carbon dioxide to global warming. The flex-fuel mixture is economically efficient and overcomes the difficulties encountered with bioethanol. The addition of methanol in the mixture enables the mixture to remain homogeneous in the presence of water (10%) and thus allows handling, transporting, dispensing and treating the bioethanol to remove associated water. The mixture produced is feasible, efficient to use bioethanol containing 10% water, expensive and costly dehydrated to avoid moisture in transportation dispensing or in use as a flex-fuel. The ternary transportation fuel mixture is easily accessible with the methanol produced, including the chemical hydrogenative recycling of carbon dioxide of industrial exhausts or natural sources. The mixtures produced have the ability of recycling carbon dioxide through biological (i.e. photosynthetic and fermentative) ways as well as reductive chemical recycling of carbon dioxide allows the carbon fuel mix to use in an environmentally friendly way. The tertiary fuel mixture has cleaner burning properties and high octane. Methanol has an octane number of approximately 100 and bioethanol of 105, thus an octane rating of 90-98 is achieved by the formulation of the preferred amounts of the three components of the flex-fuel mixtures. The high octane rating of these mixtures and their combustion properties are due to the beneficial effect of oxygenates (i.e. the alcohols). The ternary flex-fuels are transported pre-mixed, stored and used without any specific precaution to exclude moisture or water condensation. These properties make the ternary fuel mix highly practical and economical; eliminates the significant drawbacks of the use of bioethanol presently encountered in binary gasoline-ethanol mixtures; allows the practical use of the ternary flex-fuel under usual conditions for storing, transporting, and dispensing transportation fuels through existing infrastructure used for gasoline. At the same time, the ternary fuel mix offers the advantages of high octane rating, good ignition and burning properties and complete miscibility without phase separation. The ternary fuel mix is economically, conveniently and highly efficiently utilized with minimal additional cost of production, transportation and dispensing facilities and is adaptable with extremely limited minor changes of internal combustion engine (ICE) vehicles.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of making the flex-fuel mixture involving mixing the gasoline, bioethanol and methanol together in the amounts recited and under mixing conditions to form a homogenous mixture.