I agree with Dahon. Most (say 95%) of people are really decent human beings. If one of these hits you with their car, even unintentionally, my experience is they usually are totally apologetic and concerned at the scene, which I believe is genuine. These are not mean, evil, people. However, with the passage of time, the empathy subsides, and the reality of higher insurance premiums, court costs, legal fees, sets in. They think they need to protect themselves. Then the tone changes. The story may even change. Then it gets ugly. Then they will try to get away with as little punishment and cost to themselves as possible. This is simply human nature.