“Some parts of the country are so densely populated that public transportation makes sense.”
Those parts already have mass transit.
“I’d certainly be opposed to somebody taking away cars or confiscating rural property,”
They won’t ‘confiscate’ them, they’ll just be so expensive only the elite will be able to afford a private car.
And other parts of the country will never become so crowded that mass transit becomes an real option?
That's what Los Angeles thought not so long ago.
Even if you love to drive, would it be a bad idea to let others take the train?
More room on the highway for you.
Which is really the point, isolate freedoms to just be accessible to the noble classes. People call it socialism, but I am leaning more towards calling it Feudalism.