[dewey]

I haven't used Cabin but a lot of other bus companies (Megabus, Greyhound, Flixbux,...) and trains with sleeping compartments and I imagine the bus to be a lot harder to sleep on (vibrations, breaking, highway noise,...) than a train on fixed tracks.

[dageshi]

I've done sleeper buses/trains in south east asia/China and my impression was you actually get used to it fairly easily. The trains were generally better simply because the beds were bigger, but I'd definitely take a "sleeper" bus over a regular sit down bus any time, lying down even if it's a bit cramped is always more comfortable than sitting up.

[hasteur]

Have you ever taken a Greyhound? Granted I have a n=1 experience, however a Bus leaving Denver (with a final destination of Dallas) leaved much to be desired.

The route-through method means that you'll stop about once every hour for 15~20 minutes for on-off and snacks/restroom. If you're still somewhat wakeful these stops are just at the twilight phase and you don't get truly restful sleep.

[nkoren]

Have you ridden trains in America? I've travelled almost every Amtrak route across the country. In a country that properly maintains its rail infrastructure, Cabin will definitely lose much of its competitive advantage. In America, however...

[dewey]

Only used trains in Europe so far hence why my impression of trains is probably a bit biased...

[InitialLastName]

Not biased, you just have an impression of trains in systems that are well-funded as a public service. Come to America to experience the opposite.