San Francisco runs old street cars from all over the world. Milano , Moscow , Munich. They maintain them and they a charming. As to weather Linea A cars are worth refurbishing , I cannot say. Buenos AIres at one time had street cars. It would be a good idea. I like old things too. Important to preserve some history.
As an aside , I seem to remember the Senior Macri had something to do with the purchase of trains from China. Like a little commission of some $10 million dollars. Just saying it is nice to know the right people.....