Consumer vehicles are definitely getting there, at least for high income and/or high net-worth people. And while that is a relief, it is still very troubling t

Consumer vehicles are definitely getting there, at least for high income and/or high net-worth people. And while that is a relief, it is still very troubling to think about the implications for our transportation infrastructure as a whole (where consumer vehicles represent a minority fraction.) How will we power our ocean freighters, our freight trains, our 18-wheelers, and our high capacity airplanes without high energy-density hydrocarbons (or with prohibitively expensive hydrocarbons)? I can imagine nuclear and electric solutions (hand-wavy or hypothetical) to some of these modes, but could they be implemented on a global scale in time? It makes me wonder what our transportation infrastructure will look like 100 or 200 years from now. -In what non-obvious ways will we look backwards to people of the future? -Will these people envy how cheaply we moved goods across the globe? -Will they laugh at how expensive it was to move things across the globe? -Will they even have the luxury of thinking about these things?