Cummins entered a joint venture with a major auto manufacturer to develop and manufacture light-duty diesel engines for various vehicles smaller than 8,500 pounds gross vehicle weight, including standard pickup trucks and sport utility vehicles. Certain bus, marine and industrial applications also will be served by the engine family. The first vehicles with this engine are expected to be ready for market by the end of the decade. Cummins expects the diesel engine to use an average of 30 percent less fuel than gasoline engines for comparable vehicles. The concept for this product is the result of a nine-year partnership between Cummins and the U. S. Department of Energy.