The green on the Smart Fuel Visa Gift Card is a symbol for environmentally friendly biofuels – cleaner-burning fuels made with recycled oils and crops such as soy beans, grains and palm oil. Biofuels have been around about as long as internal combustion engines. Henry Ford originally planned to run the Model T on ethanol, for example, and early diesel engines could run on peanut oil. The discovery of massive fossil fuel oil deposits in the early days of automobiles provided a financially attractive alternative. Celebrate today’s alternative – biofuels – with Smart Fuel Visa Gift Cards.