/r/solarpunk is a sub for those interested in “solarpunk aesthetics” which means carbon free degrowth utopias for their scifi stories/games, etc.
Naturally their zero CO2 emissions world has no place for planes.
https://old.reddit.com/r/solarpunk/comments/113j3et/how_do_we_travel_overseas_in_a_solarpunk/
A bit arduous is quite an understatement
Once we get rid of capitalism everyone will be free to sail around the world 
This is literally how it was done for all of history until the mid-1800s.
Sailing across the oceans was quite dangerous back then, I doubt redditcels will enjoy being in the middle of the Atlantic during a storm.
https://old.reddit.com/r/solarpunk/comments/r267s1/the_future_of_long_distance_air_travel_airships/
sail boats. people will have a lot more time to travel. in fact the voyage will be as important as the time spent in the destination, if not more important.
in fact i'm willing to bet that, in the future people will spend way more time travelling the world than we do now. because our "union" will not be because we share products it will be because we will share experiences.
humanity will not be tied economically it will be tied because we, our friends and family will have shared real experiences all around the world. no longer people will look at someone else from another country as another species because we will all travel around the world.
Bonus, some discussion on their meme ideologies
https://old.reddit.com/r/solarpunk/comments/1bbgodf/political_ideologies/
Oh no !neolibs bros 
Lot's of “wholesome degrowth”
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They're all just so r-slurred lol. Like people didn't travel much before the industrial revolution because it was so arduous and difficult. If you somehow banned fossil fuel powered ships and airplanes and reverted everything to sailing then there would be a massive dropoff in travel. Aside from the obvious "most people don't have months off at a time to travel" facet of it, the voyages would also be more expensive, because you're effectively paying for a room for a month or longer on a sail voyage across the ocean.
Like their proposal to do this would clearly tank the tourism industry yet they think more people will travel, somehow, because it
feels 
right lmao
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Where do you get the food for your month-long trip? Gonna tend to a little vegan garden on the boat?
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Salt Pork is about to come back into vogue.
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