Ethanol from crop (and hydrogen for that matter) are not good and imo red herrings, specially for land transport.
This said, as a side note, imo, Urban design that makes cars a necessity is a problem imo (and a symptom) that might be overlooked/not-realized by most people. Humans have the technology to create cities where commuting can be convenient and electric when it is required, and to reduce the need for/amount of commuting and transport in the first place.
Imagine if you had to use your car to get water(go back and forth using energy to move you, plus 1 ton of car), or had water delivery instead of tap, and had to crap in a can and put it on the side of the road so that the shite truck could go house to house to pick the crap cans, to all houses, twice a week. If this orgy of waste and inefficiency were in effect, I assure you people would find it normal and be oblivious to the magnitude of the ridiculous waste it represents, and if someone would propose aqueducts and sewers, it probably would be dismissed as utopian fantasy and crazy idea.
I went to a city where it was almost impossible to safely walk from one place to other place WITHIN SIGHT, you literally had to use your car from one commercial centre to another that would have been a minute or so away if you could walk. And people dont realize how much they are conditioned, I also literally saw someone drive around and around in a parking lot to find a place that was less than 60 paces away from a gym, to avoid walking to the gym and extra 30 paces, then when inside the gym proceed to walk on a thread mill!

I wish I was telling a joke, but Im not making it up, to me its so flabbergasting (I will never forget that, and Ill tell this story over and over and never tire of it

)
but, to get back to ethanol, yes, potential-food-crop-for-ethanol in friction-festival-and-parts-galore internal combustion engine is not the way to go.
cheers