I wish this scandal would somehow add pressure to clean up ship and truck pollution. VW is having severe consequences, but their contribution to the problem mi

I wish this scandal would somehow add pressure to clean up ship and truck pollution. VW is having severe consequences, but their contribution to the problem might not be that significant: http://www.theguardian.com/environment/2009/apr/09/shipping-pollution http://www.theguardian.com/environment/2009/apr/09/shipping-... http://www.ucsusa.org/clean-vehicles/california-and-western-states/diesel-trucks-air-pollution.html http://www.ucsusa.org/clean-vehicles/california-and-western-...