I'm fine with electric. What's wrong with electric cars? Combustion engines average around 25% thermal efficiency. Forty mph will lower accident frequency and severity, not to mention adding a few minutes to my
quiet commute.
As for generating electricity (to either charge cars or process hydrogen or boron,) I like geothermal. Few options yield better out/in ratios while being so scalable. Drilling and plant construction cost initially but will eventually pay for themselves. Pump some water into the ground, and it returns as steam for the turbines.
Obviously, we shouldn't limit ourselves. Wind, solar, and hydro are attractive as well. Make the most of each available locale, I say. But ethanol is a ridiculous waste. About 60% (I think) of the energy from ethanol is spent on production and refinement. Plus, it is my sincere belief that humankind must stop the atrocity of wasting ethanol.
