I don’t understand not wanting to find cleaner fuels. Energy is very abundant in the universe, finding cleaner and better alternatives than fossil fuels should be common sense. The fossil fuel industry has spent vast amounts of money to discredit even the idea of switching, as it in their best interest not to. Even though the vast majority of scientists across the globe are saying we are not only causing global warming but are making the air we breathe toxic, many people still poo poo it off as far left conspiracy theories. Dosent leaving the planet cleaner and safer for our children make it worth trying harder to develope better technologies ? Human beings are not going to stop their lust for energy, that’s a fact. Hell, I don’t want to give up my ability to drive anywhere, stay cool in the summer or sit in a hot tub when I like. I do think it’s well worth trying a lot harder and investing in research though to find a clean way to power these things though.