One thing I should add is, no city will ever get European-quality public transit simply by buying trains, tracks, and buses. They also need to zone higher density housing and smaller retail parking lots near most of the stops. Then builders actually have to come in and build those houses, offices, and shops as zoned. This happened in NY. It's happening in Miami. It didn't happen in LA or SF.
The extra federal spending will help some people get on buses, sure, but in terms of changing the alignment of our transportation, those are all local decisions, and they're not easy ones.

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