Adding stuff to trains ("cars"?) increases the weight, which means more energy is needed to move the thing. It also takes up space, which is very limited.
Some storage system near a station (where there is more ventilation) could make sense, but probably costs more than the system mentioned in the IanVisits blog to return power to the city (i.e. convert the DC the trains use back to AC for the city).
I don't think the isolation idea would work. Where does the air for people on trains to breath come from?
Some storage system near a station (where there is more ventilation) could make sense, but probably costs more than the system mentioned in the IanVisits blog to return power to the city (i.e. convert the DC the trains use back to AC for the city).
I don't think the isolation idea would work. Where does the air for people on trains to breath come from?