These days very few, or two, Wisconsin and New Hampshire, there's no federal law on it and states laws very a lot both in nature and time of enactment. Some places have or had laws where you could simply place a bond or prove you had means and assets in excess of what insurance would cover anyway on the theory that it's really silly to make a multi-millionaire have liability insurance, essentially forcing him to pay a statistically higher amount of oney when he could just as easily take, say, $20,000 and dump it in some interest paying bond.



Same thing that happens if a person comes up and smashes your car with a baseball bat - or accidentally with a shopping cart - you can sue them and if they have no money you're semi-screwed.