The problem with this for me is the basis on which its "green". Its the same train of thought that has given us E10 petrol. The idea is if the plants that are used to make the fuel absorbed the Co2 recently then if we burn it this balances out the effect of burning it. It assumes that the problem with carbon fuels is just the fact that the CO2 trapped in oil taken from underground was trapped millions of years ago and we are releasing it now. It avoids the problem that we are generating way too much CO2 for all the earths natural processed to balance it out (apparently). So by clearing some trees and planting bio fuel plants which we harvest for this e-fuel we are removing a big chunk of the natural COs absorbtion, so if we didn't make bio or synthetic fuel we would have more natural CO2 absorbtion and also less CO2 generated, so its not really green its just designed to make us feel less guilty and make a buck out of a serious crisis. I want to drive my 3200 for ever but I am not going to pretend it nots killing the environment, burning carbon based fuel is a problem and its does not matter where it comes from.