 In 1907 the Seattle Car Mfg Company also known as the Car Company moved to a large manufacturing plant in Renton after demand for the company's railroad equipment exceeded the capacity of its Seattle plant.The Car Company was the only manufacturer of train cars on the west coast.The Renton plant expanded to foundry capabilities in 1911, and Seattle Car and Foundry Co merged with the Twohy Brothers of Portland in 1917 and became the Pacific Car and Foundry Company or Paccar.