“I would really like it if a non-subsidized railroad could get me and my vehicle from Cleveland, Ohio to Orlando, Florida in 6-8 hours at a price competitive with the airlines.”
May I suggest wishing to be able to walk on water? You’ll be able to do that before trains with auto cars cars can average speeds of well over 150 mph.
Unfortunately, we live in a political climate that makes high-speed individual travel an impossibility. It took over a decade to get rid of Jimmy Carter's 55 mph speed limit. Imagine what effort it would take to design and build a highway worthy of 150+ mph travel.