And also, the "deployment" of cars if you will, has brought and still brings malignant effecfs on society, not only positives. If by cars you mean cars for transporting individual people in non-critical situations and the corresponding industrial and political developments, especially around urban planning.
Nor arguing about the significance of the effects, but the discovery of electricity and how to use it seem more useful to me than the discovery of using fossil fuel cumbustion for transporting people.
Road transit in total is a different thing of course.