Answer:
25 million
Explanation:
More than 25 million cars were on the road by 1930. This is extremely remarkable when we consider that the car had only been created a few years earlier. One of the developments that allowed the car to become popular was the creation of the Model T by Ford. This was the first truly affordable car, and it allowed most families to be able to buy one during the 1910s and 1920s.
