Bio-ethanol from corn = Starving millions!
I'm sorry, but I have no sympathy for these companies. Corn is a highly valuable food stock, in a world where a quarter of the population are hungry.
Yes, we need to do more to reduce our dependance on fossil fuels, but using a food crop is not the right move.
I think that until someone masters an effcient method of electrolysis for Hydrogen, GM crops are the way forward for fuel. We could engineer them to grow in places not normally suited for food crops (desert fringes for instance). We could engineer them to grow bigger and faster (maybe we could even get 2 crops a year).
For now, I will continue to use good old fashioned, just like yer mum used to make, Unleaded.