Brother be realistic..... modifying railway coaches to hospitals needs time and money. There is lockdown everywhere from where u will get workers to do all modifications in Railway coaches to make it a hospitals. Turning it to a hospitals needs huge time, money, manpower. Most of old coaches of IR are in scrap yards or in CDO' s some of them r immovable now who will bring those old coaches to place them at stations and after 14th april Railway has to remove them for running trains and within these 20days not possible.
There is a shortage of ventilators already for hospitals and central and state government ordered new ventilators for hospitals and you r asking ventilators for old Railway coaches........
more... not only modifications but whole electification of old coaches needs to be done that too needs staffs and time. Also water , electricity, etc are also necessary for keeping patients there.
Apart from this there is shortage of doctors, nurses in hospitals only from where will u get them to attend patients in old Railway coaches. Brother these ideas r impractical and thought by people who r not practical in life is the person who thought this idea.
Don't think these ideas just follow what doctors and our honorable PM Narendra Modi says that is be in home don't come out of ur houses and u will be safe and we all will defeat this virus in this 21 days.