Interior for the Märklin 4068 SBB- Restaurant car

The Märklin Restaurant car 4066 never came with a interior, also not in the replica - set 40661.
This is not a real model of the prototype, it should just look like an interior of an European diner.
The interior can be inserted in the car without disassembling. The kitchen consist of four parts, the seats can be easily cut in four parts to insert them. The parts should be fixed with adhesive tape.