Even the battery techs that show the most promising (in-lab, no guarantee of ever coming to fruitition) stats like lithium-air only have energy density roughly

Even the battery techs that show the most promising (in-lab, no guarantee of ever coming to fruitition) stats like lithium-air only have energy density roughly equal to or a bit lower than fossil fuels. Anything that actually blew that away by such huge would be worth billions if not trillions.