Similarly, Paris is building 200km+ of new fully automated, fully grade separated, mostly underground metro covering the Paris metro area, and using the opportunity for urban redevelopment as well:
Yep, it's going to be amazingly useful when it comes out (first sections are scheduled for 2025, sadly too late for the 2024 Olympics) and a ton of very good developments are happening around the new stations.
https://en.wikipedia.org/wiki/Grand_Paris_Express