This isn't how it has to play out. You can fly, you can eat meat, you can import things, you can do anything you want so long as it's sustainable. What if car

This isn't how it has to play out. You can fly, you can eat meat, you can import things, you can do anything you want so long as it's sustainable. What if cargo was travelling by modern, computer controlled sailboats that used zero fuel? What if planes used fuel produced by yeast that fed on raw sewage? What if cars could be made out of mushroom-based plastic and fully recycled metal? None of these things are impossible, but nobody will do any of them until they're forced to. Either that's by preventative regulation, or, if things get really grim, by necessity.