By 2060: get rid of the trains, track and signals altogether and turn the tunnels into roads. Connected to the road network but exclusively (so they can go as f

By 2060: get rid of the trains, track and signals altogether and turn the tunnels into roads. Connected to the road network but exclusively (so they can go as fast and close together as safely possible) for electric self driving cars with shared ownership, on demand booking and door to door service. That would be progress.