Saying the US was designed around cars doesn't mean it is unique in that it is designed around cars. And the relevant metrics would probably be something like

Saying the US was designed around cars doesn't mean it is unique in that it is designed around cars. And the relevant metrics would probably be something like miles driven and average speed, not the number of cars per capita. Jay Leno or Jerry Seinfeld may have 1,000 cars each but they can only die in a car accident once. Every in San Marino owning a car doesn't mean anything if they only drive it 15 mph through their city streets which were mostly all designed before the advent of cars.