The bill will try get the Department of Energy and the National Institute of Standards and Technology to find ways to move new energy sources through existing infrastructure. This will not be easy. H.R. 6203 even tacitly admits as much with the provision that will give fuel suppliers a way to test the sulfur content of new Ultra Low Sulfur Diesel that has moved through the country's infrastructure. Ultra Low Sulfur Diesel is supposed to be, well, ultra low in sulfur, but residual sulfur left in the infrastructure as it exists today can seep into the new fuel.
[Source: Shelbyville Times-Gazette via EV World]