In 1909 Durant brought in Cadillac, Elmore, Welch, Cartercar, Oakland (predecessor of Pontiac), and the Reliance Motor Truck Company of Owosso, Michigan and the Rapid Motor Vehicle Company of Pontiac, Michigan (predecessors of GMC). GM's first acquisition was Buick, which Durant already owned, then Oldsmobile on November 12, 1908. Durant formed the General Motors Company in 1908 as a holding company, with partner Charles Stewart Mott, borrowing a naming convention from General Electric. Whiting, owner of Flint Wagon Works, sold him the Buick Motor Company in 1904. Durant was averse to automobiles, but fellow Flint businessman James H. Durant's Durant-Dort Carriage Company, of Flint, Michigan, had become the leading manufacturer of horse-drawn vehicles in the United States by 1900.