I think this sums the whole debate up quite well.
Article written ,Chris Thompson CAE Eng Tech AMIMI, of the Stag Owners Club.
I dread to think what I will have to do to get the +8 to run without melt down if E10 is introduced.

I better source some knock sensors quick and replace everything that comes into contact with it with aircraft grade materials, and run a pre-drive check list for fuel leaks. Sounds like a move to make manufacturing and running petrol engined cars prohibitively expensive and push the industry into another direction, not that I am a cynic

Time to write letters to MPs, but maybe it's too late already and the Elephant is already in the room, how did it sneak up on us