I think at some point you are going to have to accept the fact that no, cars are not going to go away in the US. You can crow all you want about how much better mass transportation is but you're arguing for the benefit of society to the detriment to the individual, something that will never fly in the American ethos.

Biven that all the near-term technological improvements like AR systems, electric/non-internal-combustion engines and size coming down (Smart Car and equivalents have been gaining traction in the US for some time), combined with the basic geography of most of the US outside of cities, combined with the politics, combined with things like national security (why we built the international highway system in the first place), all predict a future where no, rail lines stuffed with humans who then take rideshares to their final destination are not going to be our reality.

I'll also tack on that progressives' constant attempts to belittle car owners does a very poor job convincing anyone that mass transit should be or even can be our future. When you sneeringly tell, say, a middle-aged mother who has relied on cars her whole life and continues to rely on cars now, that she's just made arbitrary choices to need a car and she could eliminate the need for one easily, she's going to laugh at you, as she should. Unless you want to expand the definition of "choice" to be "anything that is not an involuntary biological function" it's just naively facile to say something like that, but these threads are full of people ready and able to tell their fellow Americans how they should live. That's just not going to effect any change at all.