I did just find out that U-Haul has some that I can one-way rent, though they are expensive, closer to $750 USD, which is roughly the price of a next day flight.
Why would one normally take this route (13 hours and $178 while a flight is 2 hours and $213), scenery?
edit: and when I’m restless the train has much more space for light exercise or walking.
You don't have to be 25 to rent a uhaul.
There are uhaul franchises nearly everywhere, at least compared to regular car rental outfits.
And a note: uhaul has two fleets. The local only fleet, and the one way fleet. The one way fleet has more reliable/newer trucks. If you're doing a lot of miles locally and you ask nicely, they'll sometimes give you a truck from the one way fleet.
Good luck getting home!