History of General Motors Departure (bearings); Delco Electronics and ACDelco (electrical and electronic components); GMAC (finance); General Aviation and North American Aviation (airplanes); GM Defense (military vehicles) and Electronic Data Systems (information technology). General Motors was capitalized by William C. Durant on September 16, 1908 as a holding company. The next day it purchased Buick Motor Company, and rapidly acquired more than twenty companies including Oldsmobile, Cadillac, Oakland, now known as Pontiac, and McLaughlin of Canada. Dr. Campbell, Durant's son-in-law, put 1,000,000 shares on the stock market in Chicago Buick (then controlled by Durant). Durant's earlier company, the Durant-Dort Carriage Company, had been in
General Motors Proving Grounds General Motors Proving Grounds General Motors operates several proving grounds. Desert Proving Ground Yuma is a facility co-built and leased by General Motors located within the US Army's Yuma Proving Ground, near Yuma, Arizona. The facility came fully online as of July 2009. The site contains an inner facility sitting on with a campus containing of building area and also has 40 miles of roadway. One of the main reasons that this site was chosen was the already imposed no fly zone which helps prevent unwanted photography of pre-production prototypes undergoing testing. The facility is also used by the US