There has been a lot of research to try and find an alternative to fossil fuels, and the most recommended solution seems to be biodiesel or even methanol. There is however e85, a mixture of ethanol and gasoline which is mixed at a ratio of 85:15 respectively. E85 is becoming more and more popular in the US where there are nearly 2000 stations that sell just this kind of fuel leaving some customers without any choice. There are about 7 million fuel flexible vehicles that can use it. This is understood to increase significantly over the coming years. E85 is known to be less efficient than..