I agree, installing today's cellular system in subways is a bad idea. Think about amount of radiaton you'll expose people in. All cars have metallic case, it won't work well unless you install a device within each, or unless you fry people into mutants. Would you want a cellular base station installed in your room? Little exaggerated, but not far from reality.
Unless very low power, higher capacity wireless communication technologies are used, I'm against it. As a start, wifi can be used for internet access, delay tolerant messaging, and everyone will benefit p2p technologies. I believe, majority of people would prefer private messaging in public places, if they have the option. Finally, nobody would tolerate the Lombard effect. Best, Emre -- NYCwireless - http://www.nycwireless.net/ Un/Subscribe: http://lists.nycwireless.net/mailman/listinfo/nycwireless/ Archives: http://lists.nycwireless.net/pipermail/nycwireless/