The most successful passenger automobile was the Ford’s Model T because of the Line production.
Explanation:
Although automobiles were produced and sold before the invention of Ford’s Model T, they were not affordable to general people because of the complex manufacturing process.
But, with the development of line production method which was followed to produce Ford’s Model T car, the automobile was affordable for the middle-class families in America.
This model was produced between October 1, 1908 to May 26, 1927 and provided a faster way to travel than the horses and trains.