I've been to the US several times, and had great road trips with rental cars. But this year will be different! I will spend three months in San Francisco, CA, so I am planing to buy a car instead of renting one.
The problem is that I am not an American citizen, I do not have an address in the US and I am not willing to wait one month for the paperwork to be ready so I can use my car. On the other side, I want to be 100% legal, meaning I do not want to "stretch" any law.
I could use any piece of advice you can give me, thanking you in advance for that!