Yes. With cheap tunnels one could hope to plan for many exits and a large network that goes everywhere. Like a road system, but underground. Imagine an early ci

Yes. With cheap tunnels one could hope to plan for many exits and a large network that goes everywhere. Like a road system, but underground. Imagine an early city where all the roads are really just paths in the dirt that are completely rutted and almost impassible when it rains. Someone proposes to pave the main road with cobblestones. This is really expensive and wont help people travel on all of the other paths that still won't be paved. Ok. Give up I guess; bad idea. No. Let's start with this one, fix the various problems that arise, discover how to make a good paved road with the least amount of labor and resources, and continue to expand the paved network to reach everywhere in the city. This is what happened. Would you want to go back to unpaved roads in a city? Traffic congestion is killing American society. I like American society. Many people don't like to live all packed together but still want to work with other people and have the amenities that cities enable. Cars and interstate roads allowed that for a few decades but now we need a new system to continue expansion of the free flow and interaction of people. Underground roads could replace interstates and we could turn them into grand boulevards for pedestrians, bikes, and other slow vehicles. Wouldn't that be great? Almost all car traffic is underground. Would you support such an idea?