This is related to my other comment. In Somerville/Cambridge there is already a visible change in the neighborhoods like Union Square along the proposed Green L

This is related to my other comment. In Somerville/Cambridge there is already a visible change in the neighborhoods like Union Square along the proposed Green Line extension. It was this way in the streetcar days of the early 20th century too, where neighborhoods sprung up when new lines were built. In Portland OR, where I used to live, the new MAX lines are having similar effects. I feel like Ubers place to shine is low-density high-income low-traffic suburbs. That's OK too, because that's a big chunk of the United States.