WMATA busses need serious work and there aren’t enough bike lanes for last mile connectivity, but by US standards it’s about as good as it gets outside of NYC.
The busses are the main differentiation between European and US cities in my experience. Only Seattle and SF get close to running a decent bus service.
And you can repair them without needing to shut down a whole railway. All these projects to put solar panels in novel places are totally pointless and solving a problem that doesn’t exist.