one of the reasons why I know it's TGV duplex are the culprits for the bad GPS data is the fact that not even the tag could get a proper fix. no one's iPhone on a packed train could get proper location data, while they totally could on the AVE on my way there
It's kinda 🤯 watching you and @rail@flufftech.net wandering around Europe so freely while public transit is so absolutely effed in the US that most people spend their entire lives never visiting anything beyond their state or the nearby bits of bordering ones.