Well, this is the situation. Me and my traveling buddies are all under 21, we're 19 to be exact. And we are all very eager to explore the states and we would preferably want to do this behind the wheel (even if we're openminded for other possible options of traveling too). But as we all here know we'd need to be 21 to rent a car, so we first thought we'd buy a cheap car once we arrive in the US. But after some research on the Internet this turned out to be pretty much impossible since there's apparently no way we could get an insurance without a US post adress. I've seen in other threads by people with similar problems that people suggest that they could write their friend's post adress on the insurance paper, we've got no friends in America so that's not an option.
So what I wonder is basically whether there's anyway around this or if you've got any tips of other ways to travel through USA OR if we better not bother at all before we're 21+. We're planning to stay for a longer time and our budget is around $10 000 each, maybe more, but cheap options are what we primarily look for.