Final answer:
In the United States, for every 1,000 residents, there are about 800 motor vehicles on average.
Step-by-step explanation:
For every 1,000 residents in the United States, there are approximately 800 motor vehicles. The ratio of motor vehicles to residents indicates the prevalence of car ownership and usage within the country. Understanding such statistics can help in planning for infrastructure, environmental considerations, and economic activities related to vehicle manufacturing and sales.