[sbierwagen]

Unless you used the car routinely, a hackier solution would be just to buy out a block of rooms in the sleeper car.

Amtrak.com suggests rooms from Seattle to LA are ~$700 each. https://www.craigmashburn.com/amtrakcardiagrams.html says a Superliner sleeper car has 20 rooms. So you could rent out an entire car for about $14,000. Complementary meals included!

[hn_user2]

Or just rent a Pullman car. I have not actually reserved one, but I always find myself searching around for charter companies when I see these types of articles.

These guys claim $2500 a day for a charter. Not sure if it is legit or if there are other fees. (I assume you then also pay all the Amtrak fees). But I do have this on my back burner to try sometime. Since they offer some 4 bedroom coaches. Would be fun to get a group together to split the cost.

https://www.pullmans.com

[spc476]

I got to ride a private car for a few hours [1] thanks to a friend who rented one for a family vacation/birthday gift. The car went from Jacksonville, FL (where the private car resides), to Miami, then to Chicago via Washington, D.C. (or New York, I don't recall) then back to Jacksonville, FL. Even though he got a good price (he knows the owner), and he never mentioned the price, it wouldn't surprise me if the week vacation cost over the price of a new car (the price did cover the two "employees" that came with the car, a chef and a porter).

[1] http://boston.conman.org/2015/08/05.4

[jbeales]

The American Association of Private Railcar Owners has a page on their website listing cars available for charter: https://www.aaprco.com/travel/cars-for-charter/