I think SF is building the Central Subway pretty quickly. It looks like the subway will be completed in a few years. It seems like a success in terms of putting

I think SF is building the Central Subway pretty quickly. It looks like the subway will be completed in a few years. It seems like a success in terms of putting new infrastructure in a crowded city. The BART SFO extension took about 30 years to complete. That took a lot longer was a lot more litigious than the construction of the Central Subway.