Comment by bluGill

There are a lot of RR cars around the country that are not movable for various reasons. Many of them because while the car could be moved, the tracks don't exist. Others because the running gear is worn out.

There is still hope for those cars. If you want to pay for it a ridding company can transport anything from anywhere to anywhere - they will get the correct permits and then load it on a trailer - this is easiest and most common, but not cheap. In some cases you can get an override from the RR to tow it - they can put new wheels under it quick enough, and then put it at the end of the train on a slow month (which is to say they will avoid their busy routes were something breaking would cause problems), again not cheap, but possible and sometimes the RR will subsides the cost if the car has historic value. If there are tracks you can restore it where it is and then the RRs will take it again.