As an Australian, I can honestly say putting brochures in the car or even some sort of survival kit would makes us more culpable to a lawsuit than not having them.
The brochure itself would be a major drama as we would have to cover many languages and make it absolutley idiot proof.
The downside is we are learning from American tourists that visit here a lot about civil lawsuits.
If you drown its the beach, town, mayor or lifegaurds fault.
If you drive on the wrong side of the road its our fault cause we don't have the same rules as Americans do etc etc.
I'm not yank bashing just giving a rough example of how crazy things can get.
I believe Britz hire is working on safety gear for all their 4WD campers as German tourists have a nasty habit of dying in various ways! It is quite crazy to see how people carry on in outback Australia. And thats excluding all the crazy East coast Australians that get into difficulty as well.
I'm sure similar things happen in the US as well.
The solution, which is education is one that costs money, money that some business can't or won't spend.
My rant.