To be precise, Amtrak is offering what it calls “social media residencies,” which do indeed involve writing – on, as you’ve probably already figured out, social media. Here’s what they have to say about it:
The #AmtrakTakeMeThere Social Media Residency aims to showcase how people from different walks of life travel by rail. By way of social media, our chosen residents will share their individual experiences aboard our long distance trains while engaging users through their respective online communities.