Ehh, building codes and land ownership mean that I don't expect much progress. Two things that jump to mind. Build houses out of old tires. There's a lot of th

Ehh, building codes and land ownership mean that I don't expect much progress. Two things that jump to mind. Build houses out of old tires. There's a lot of them and mostly they get burnt. Not enough for everyone to have an old tires house in their lifetime, but enough that maybe 10-20% of houses could be old tires? Shipping container homes that can be transported easily that hook into some kind of "dock" providing septic, power, etc. Most would probably consist of a few segments, but even one 40ft high cube is bigger than many people's apartments. Of course basically what I'm describing is an RV, so why aren't those more common?