New York Times: Inside the National Vehicle and Fuel Emissions Laboratory here, a mammoth contraption, with steel rollers, advanced electronics and exhaust tubes, is nearing completion. The project an enormous truck treadmill is the new centerpiece of the Environmental Protection Agencys complex. One of the largest vehicle testing centers in the world, the truck lab will play a crucial role in shaping and enforcing a major new environmental mandate by the Obama administration that could dramatically transform...