The best-selling car of all time General Motors, which holds the top spot for total vehicle sales (probably), only has the Chevrolet, ranked 12th by model—though strictly speaking, it’s a separate brand. The strategy of diversifying brands to target the North American market hindered the emergence of a globally dominant vehicle model. The Ford Model T, which marked the beginning of mass production, was priced only slightly above the average U.S. annual income at the time; as production scaled up, its price dropped significantly due to economies of scale, leading to explosive popularity. No industrial product has ever had a greater impact.