On this small scale, rebuilding would likely be more expensive than this tunnel. But extending this network to every home would be (IMO) on the same order of magnitude as redevelopment in cost, complexity, and time. Redevelopment is complicated during construction but this system is also complicated forever. Our cities are already being rebuilt piece-by-piece every day; I'd just like zoning laws to permit rebuilding with mixed use and higher density development
It seems like it would always be small scale, just replicated. I don’t think they’re trying to long distance delivery through this. Like if wanted a pizza from 100 miles away, I’d not expect that to be supported.
I’m seeing it like a LAN. Which is how most of America is built. Clusters of businesses supported by surrounding area of residential. Any interconnection would likely benefit from batched movement into the node (cargo truck) then items go into this as a last mile solution.