We're taking the Cardinal this week for the first time, solely for the epic view (and train feeling of course). I've read here that the Cardinal windows can be very dirty, and have seen that problem on many trains, understandably. On the Empire Builder we saw a guy who did not appear to be an Amtrak employee squeegeeing the outside of some SSL windows and people cheered. I really think he was just a guy who brought his own squeegee. Should we bring one or will we be hollered at or jailed?