Politicians in Sweden after WW2 had interesting mindset. They really tried to prepare the country for various worst-case scenarios. Researching wooden gas for c

Politicians in Sweden after WW2 had interesting mindset. They really tried to prepare the country for various worst-case scenarios. Researching wooden gas for cars was one thing. Another is how they investigated if they should make own nuclear weapons. They decided not to after getting assurances from industry that they can make an atomic bomb within months if needed. I wonder what other possibilities or backup technologies they considered?