i meant to say that. switch today and get the no mistake guarantee. comcast business. built for business. . well more on our breaking news. amtrak has revealed it has speed control technology on the opposite side that s the southbound side, not the northbound side. tom, can you explain exactly what this technology does and how it works? it s all about creating a matrix of information around moving trains and it starts with satellite technology gps like you have in your car and that gives the engineer with the