Telegraphs are really cool and, while the bandwidth is low, we could still send cat pictures iwth a relatively low-energy system in a world that adjusted its expectations.
Lol. Everyone going to the data upload center to upload their stuff for the week before it gets put on the big hard drive on the train. And then the train goes to the nearest major city, downloads everything to the big archive, and comes back with a super-compressed updated index so you can make requests for data during next week's run.
Telegraphed low quality memes for shit-posting at the speed of electricity, and stationwagon’ed high quality memes for those who prefer low speed shit-posting. It could work.
To add - I’m not sure if you’re familiar with the origins of that joke but here’s a Reddit post to explain it