For those stating that the premise of a train wrapping around the globe that has to keep running is too unrealistic - that is correct. Though it's a great metaphor for how our class based elitist society is part of a never ending circle that, given the right circumstances , could entirely collapse at any moment.
So no, train like this isn't possible. But that's not the point. Watch the story unfold and if need be pay attention to everything else and let the train part fall to the background. Either way, it's an interesting story and the acting is well done. The scenery is amazingly well thought out , and for a pilot episode they did decent job knocking it out of the park.
I wasn't the biggest fan of the film- but I'm quite interested to see how they do with this. So far, so good.
WARNING - you do need an imagination to watch this show. So if you take everything too literally you won't enjoy it.
The only unbearable part of this show is daveed Diggs- he doesn't sell the part very well at all. The show would be much better without him as a centrepiece: it's a shame they couldn't find Idris or someone a bit more captivating in their acting - Diggs is lacklustre at best and he's outshined by every other character , even the background ones.