Earlier quoted context omitted.
90+% of American households own cars. Approximately 30'000 die in car crashes every year. I'd say the US is addicted to cars.
Under a nonsense 'definition' that nobody uses. Sure I can make any point if I get to redefine words any way I want.
In human geography terms it simply means that giving up cars is a supremely difficult thing for society to do - particularly in some Western areas that are designed around the idea that all people have cars available [cheaply].
This has enough similarity to addiction that people use "addicted" commonly like this - "I'm addicted to coffee" or "I'm addicted to chocolate" usually just means you'd find it hard to give it up. [I don't know if clinically those statements are true for some though.]
As it happens I've given up alcohol, chocolate, coffee, videogames, and cars at various points and the car was definitely the hardest requiring the most change in my lifestyle.