The bi level cab is missing from the list on the peninsula corridor timetable menu does shop up on trains still no timetable available. On the other side the Gallery cab car has its services back
This has been a known issue with the cab car from the Baby Bullet DLC in TSW3 on all platforms since launch. It's supposedly set to be addressed whenever PC gets the long-promised preservation update. It's why it's one of several routes I only play in TSW2 and don't even bother installing in TSW3.
I'm aware it's been in since peninsula corridor was released on tsw3 about the bi level but now it only shows up in the to thr trains menu not on the route menu. The gallery cab car services that where missing was the same but they are now back unexpectedly
Ah, on XBox the gallery cab car services never went away, only the bi-level, so I'd not noticed. Guessing it was another quirk of the PS5 DLC limit. (Yes, I slightly cheated in my Screenshot contest entry last week and took it in TSW2 since it's the only place I can drive that cab)