If enviromentalists would work with the railroads to get long haul trucking companies to use intermodal there would be some significant improvment to air quality and energy conservation, but modern enviromentalism is no longer about saving the enviroment, its about screwing somebody out of something--no matter how much pollution it causes. I used to be involved with several enviromental groups and learned this first hand. Is it any wonder the Green Party in Europe is headed up by former heads of the communist party? (don't believe me, it's why I left the group, look it up for yourself.)