Then you have the "seasoned drivers" travelling programs, where one would have a car delivered long distance in exchange for travelling expenses.
I used to look for the snowbirds bi-annual migrations between the NE and Florida to find cars to be driven along the eastern coast.
Usually retired people would do it if the owner would pay a token daily expenditure fee that would cover hotel and meals, plus gas and toll fees of course. Some of those program are even bonded. A win-win solution for elder travellers who wish not to pay their own transportation.