If you don't have a body/shell, what good are the other part even if they are out data?? A new propulsion systems can be had at a cost as well a new truck system and wheels. Is it worth it, than going to a new car??The body rust has very little bearing on whether a car is capable of going out in service or not. There are quite a few cars that have holes large enough to put a hand or more into, and yet they still see service every day.
What is a very big problem is with the propulsion systems and the air systems on the ageing cars. And on the Cs the wear on the wheels, as changing them is no insignificant task. A number of cars were retired early on solely because they had 4 pairs of bad wheels.
Sound like TTC stop ordering new wheels long ago and another reason for 2019 retirement if none of the scrap cars had good wheels to pass on to other cars.
Its like having a house with no foundation.