GO Train/Bombardier Bilevel Passenger Car

This is the basic cut info for a layered Bombardier bilevel passenger car, as seen on GO Transit/Metrolink/Coaster etc. trains.

This layout has 1 exterior and 3 interior layers on a 300mm-square (1') sheet.

The interior layers have a "stair" ramp from lower to mid-level, and another from mid-level to the top-level. I laid 2 layers in one direction, the the other 2 in the other direction so the tiny people could climb to the top floor.

I used a 6.35mm-thick sheet (1/4"), set into 6 laye