Realistically. Trains will revolutionize road transport of goods and people if the train industry properly maintained their rails, operated above board (unlike the one that had the chemical spill in Ohio and other issues), and expands a bit. The largest expense in good transport is long haul and no one wants to drive long haul. Last mile will probably need trucks and drivers for at least 3 to 5 more decades. And taxi services have similar challenges to last mile delivery. Personal self driving systems need even more consideration than taxi services, and will likely take five to ten years after taxi services become recognized as safe.