This page assumes that you are, at least to a degree, familiar with the subjects of Biomass and SunFuel. It won't hurt, particularly as far as E10 is concerned, to read this article. Very recently in Europe, we are being made concious of the problems emerging following the introduction of 'E10'. It will probably be the direct competitor to 'normal' premium petrol. Thereby, the mineral oil industry will set the price difference between the two types of fuel so high, that the targeted sales of of Biofuel will in fact, be achieved. Just as a matter of interest, North America introduced petrol containing 10% Ethanol ('Gasohol') in the 1970's. Brasil and Sweden also also use it to save a considerable amount of crude oil.
Indeed, only for the very enviromentally concious consumer, is the decision fairly simple. He/she accepts the somewhat higher consumption of E10 and uses only this fuel, even if there was no price difference. By the way, the the higher consumption when using Ethanol has been known for years. Have a look at the fuel-tanks (and the additional tanks) of racing cars from the 1930's. The 'green' consumer can be sure that for this particular amount of fuel no crude oil will have to be extracted. The question of the lower CO2-content is however, far more complicated. There are no dependable figures. This is particularly valid for the introduction phase of a new product. Who can tell what amount of additional transporting and whether this effort can really be compensated for by the amount of CO2 which is avoided.
For the average citizen, it's more difficult. Of course, one has gathered the necessary information, whether the car can handle E10 or not, if so, then E10 is bought, if the price is lower. Depending on the engine type, even a slight increase in performance can be achieved. Whether or not it is worthwhile, can only be decided when the fuel consumption is calculated. Indeed, in the long term, all these thoughts are a waste of time, because one day there will only be E10 (or perhaps even E20?) and Premium-Plus. We will then remove these sections from this text.
Just as there is (still) competition between Biomass and edible natural products and those from other sources, one day there may be the same thing between Ethanol and SunFuel. Since actually, the consumption should be calculated from the attainable kilometers per hectare-yield. Then, if one believes the VW-concern researchers, SunFuel will be there. Indeed, this is based on the same consumption for both engine types. As it would seem, the Diesel engine still has a survival chance.
As it is in real life, one glad to have a product at one's disposal, howerer, quite soon one begins to question it's effectivity and whether it could even be improved. Thus, it would have to be checked, if the subventions recieved by the manufacturers should rather be dependent on their extraction- and manufacturing processes. 10/11