Monaco has the second most roads per square mile.
India has the most roads, even though US has the most cars.
Best guess would be Monaco at about 45000 cars/sq mile although the whole country has about 10000 fewer cars than that and is only .76 sq miles.
Michigan
what country exports the most cars
USA is the country drives the most cars
China.
The country that has the most car is the USA
china
China has the second most miles of paved roads in the world after the United States.
The United States, with about 310,000,000 cars.
Monico has the most cars per 1,000 people with over 748 cars. This will vary from one source to another. The country with the most registered cars is the United States.