The Odd Superliner

[ErikGorbiHamilton]

Back when i was 5 (October 2004) i rode on 3 private cars down to Klamath Falls Oregon. On the ride back up to Washington i made a new friend of the same age on the train and we started to explore the rest of the superliners. We got to a Superliner which had the normal coach top, but the bottom section was (Believe it or not) a sort of play area (like a inside playground so to speak). Since then i have never seen a superliner like this. I was wondering what those types of superliners are called and how many are left (if there are).