This fall I did the SW Chief - Chicago to LA and connecting to the Surfliner south to San Diego. My bedroom compartment on the Superliner car was clean, but in real need of a "refresh". Some surfaces were very worn and tattered looking.
Now, the Business Class car on the Surfliner to SD looked brand new. Seats, carpet, etc. Totally "refreshed". I have been on the Surfliner annually many times over the years, for business and leisure so really noticed the "refresh".