I wonder when the complaints and pending lawsuits about the deafening noise on BART's trains will finally prompt them to do something about it. Why can't they be early adopters of noise cancelling technology? Here's some examples of such: http://www.cambridgesoundmanagement.com/?gclid=COWgyNKpjY0CFRO-hgodRRnikA
It seems like the interior of a BART car, already wired with a sound system would be a perfect platform for the technology. What will it take, aside from a monumental class action suit to get BART to DO SOMETHING!?