Cadillac's first car was completed on October 17, 1902, the 10 horsepower (7 kW) Cadillac. Based on Henry Ford's design (except for the engine), it was practically identical to the 1903 Ford Model A.
Located at Clark Street and Michigan Avenue in a triangle of land bounded by two railway lines, the original manufacturing plant remained in operation under Cadillac until the early 1990s, referred to as both "Cadillac Main" and "Cadillac Plant #1". During the last decade or so, the plant was gradually closed down -- as the freight elevators in its multi-story assembly buildings were the cause of production bottlenecks, especially when one or more were shut down for mechanical failure (despite an outside maintenance contractor having an on-site office and elevator repair and service personnel).
The company that went defunct was the Detroit Car Co, not Ford Motor Co. Cadillac did come out of the failure. But, the Dodge Brothers also launched their own company because of Henry's failure. They were building the frames for the then, Ford cars.