During Locomobile's brief, 33 year history, the company produced some of the finest cars motorcars available in America. Holding true to their slogan, "The Best Built Car in America" their hand-crafted, limited production motorcars appealed to a conservative and extremely wealthy clientele. The introduction of the Model 48 in 1911 proved very significant as it went on to become the company's most successful model, surviving through the end of 1925\\. After the Model 48 had been officially discontinued, the Model 90 still shared much of the same architecture pioneered by the Model 48\\. Based on a conventional but exquisitely constructed chassis, the Model 48 was powered by a big 525 cubic inch side-valve inline six-cylinder. It was rated at 48 taxable horsepower, with actual output topping 100hp by the 1920s. Many of the powertrain components were cast in an expensive bronze alloy, and the engines proved extremely robust.