When you see sold-out Amtrak Trains, that may not mean what you think. Find out what is going on and what options you may have.
This article on Amtrak Sleeper Cars is an excellent place for you to start your research on Amtrak long-distance trains' accommodations.
You can find a Viewliner roomette on Amtrak's eastern route trains. Although similar to Superliners, these roomettes are slightly different.
Amtrak's Hiawatha transports passengers between Milwaukee, WI, and Chicago, IL, with three intermediate stops as well, including the Milwaukee Airport.