The future is as hazy as literally everything else. Do we have cars where they aren't needed? Yes Do we have rail systems that are hot garbage? yes Do we have rural area that are sprawling making rail and micro less possible? yes

Will trains and public trans be a staple of the future just like it is today in larger cities? yes.

When I lived in Philly, I took the train everywhere but the grocery store.... except when I had leisure time then I took my car... and where I went, and a train or self driving care won't take me there.