I was rather disappointed by the internet connection on the Cascades line (going Seattle --> Portland and back). As far as I could tell, they use T-Mobile for backhaul. Who are headquartered in Seattle. Yet the connection barely seemed to work for about half of the journey

boo, it's in the middle of no where along part of the route. Tmobile coverage is mainly in urban areas and along free ways no matter what slingblade tells you on the tv commercial. I don't know if you'd get any coverage on parts of that route other than wired.

Just like how sometimes when you're flying over the rockies or into canada you just don't get internets. There's still middles of no where out there. Often not very far from the freeway.