Michigan Democratic House Representative John Dingell plans to introduce a bill that would encourage the sale of diesel cars in the United States, a prospect strongly supported by the car industry but opposed by environmental groups, the New York Times (NYT) reported. The newspaper said that despite the fact that today's diesel engines are much cleaner than those sold in the US in the 1970s, and their acceptance in Europe, US regulations have restricted diesel engines to fewer than 1% percent of new light-duty vehicles and Volkswagen is currently the only company selling diesel passenger cars there.