1940s Opel Kapitan sedan - photo

[nova_robotics]

1940s Opel Kapitan sedan with "mother-in-law seats".

In Newfoundland there used to be a law that said you paid reduced property tax until construction was finished on your house. A super common tax scam was to install a door way off in space somewhere and say your house is incomplete because it's missing a deck or balcony. If you ever go to Newfoundland you'll still see TONS of houses with an unusable door. These are referred to as "mother-in-law doors" by the locals.