William C Durant founded 1908 that absorbed many other car companies, largest moto-vehicle manufacturer for much of 20th century to early 21st century, largest seller of horse-drawn vehicles before automobiles, stratified approach to sales providing different vehicles for different incomes, consolidated Buick, Oldsmobile, Cadillac, Oakland (later Pontiac), Ewing, Marquette, Reliance, Rapid Trucks, 1912 electric self starter Cadillac made hand crank obsolete, later Chevrolet, Delco Products, Fisher Body Company, Frigidaire