NYC is the one US city where trains almost make sense, but there are a ton of downsides related to cost, safety, etc. I'd love to see all those dedicated right-of-ways put to more efficient use with self-driving vehicles.
Great for uber is still limited by traffic and is a lot more expensive than great transit which doesn't get stuck in traffic, and thus is much cheaper than uber for better service.
The crazy thing is bad transit needs a larger subsidy because people don’t want to use it. So good systems get better and bad systems get worse.