No, hydrogen is bad too. ESPECIALLY if it's used in an internal combustion engine. In that case it's really horrible, far worse than burning gasoline. If burned in a fuel cell, it's not really so bad, but it's still not great, and the big problem is that hydrogen is not dense. You need a big, expensive high pressure tank to hold enough hydrogen to go more than a few dozen miles.

Ethanol will be bad even if tractors and transport convert to burning ethanol. In fact, at that point it will become blatantly obvious how bad it is, because right now it takes nearly a gallon of fossil fuels to make a gallon of ethanol, and a gallon of ethanol doesn't have as much energy as a gallon of gasoline. The system will have to run full time just to produce enough ethanol to run their own systems, with hardly anything left to sell.

Ethanol is not a bad idea. Making it out of corn is. The only reason it's even vaguely viable is that it's getting the bejeezus subsidized out of it by the government. That, and it's largely produced using fossil fuels, which are cheap because they are also being subsidized by the government (primarily in paying for externalities out of other funds).

The panacea is cellulose ethanol. That takes something that we can't eat and throw billions of tons of away, and makes it into something.

Next best is sugar based ethanol; sugar cane is a pretty good source of ethanol. The government doesn't want to go that way though because then we'd have to buy sugar cane from places we don't like and haven't subverted (yet).