History of the diesel car featured an aluminium block, DOHC chain driven valvetrain, common rail direct injection and variable geometry turbocharger. In Spring 2005, Mercedes-Benz unveiled their first application of a mass-produced aluminum block diesel engine for passenger vehicles and commercial use. While aluminum is traditionally considered of inferior strength and temperature resistance to withstand diesel applications, Mercedes engineers made extensive use of CAD/CAM design to arrive at an aluminum block that would meet with Mercedes' testing and reliability standards. First use was in 2006 model-year vehicles in the E-Class sedan and ML-class and GL-class SUVs. Similar in weight () to the five-cylinder it replaced,
Edwards Rail Car Company (1997–2008) motors. Hydrostatic propulsion employs the use of diesel engine to power a hydraulic pump which supplies pressurized fluid to two 100 H.P. hydraulic motors on the front truck, in place of the final drive gear box as per the mechanical set-up for the standard Model-20. Edwards Rail Car Company manufactured several streetcars, to a modified Peter Witt streetcar design. Edwards Rail Car was awarded a contract to facilitate some aspects of the restoration of John Ringling's private business car, the Wisconsin. Originally built by Pullman in 1905, it was used by the Ringling family for travel with the circus. The