I personally believe that they only tell you that this about E-fuels, even though everyone knows that those will be too expensive. What they are really looking

I personally believe that they only tell you that this about E-fuels, even though everyone knows that those will be too expensive. What they are really looking for are ethanol or vegetable oil derived fuels that are likely much cheaper, especially once the capacity of 5-10% in todays E10 gasoline is freed due to drop in demand. They cannot tell you that because food prizes are high right now. But I would not be surprised at all if in 2035 there was a biodiesel version of Porsche's 911.