You've probably heard about the gruesome injuries sustained by New Jersey's governor in a car crash. The other two people aboard had only bumps and bruises. Why? Because they were wearing their seat belts. I found a fine description of the physics and injuries involved, including the people who say they don't wear the belts because they want to be "thrown clear."
Sure, you hear people talking about wanting to be “thrown clear” in the event of an accident. If you want to simulate being “thrown clear,” go to the fifth floor of a building and jump out the window.If you know someone who doesn't wear seat belts, all the time every time, show them this article. They're an idiot.
Let’s talk briefly about being thrown clear, because it happens more often than you’d think. Unrestrained driver: side impact. Vehicle spins. Driver goes out the window. In one case I recall, the driver was half-way out his window when the vehicle rolled over on top of him. That was the second-most grotesque scene I’ve ever been to. Another scene, the driver went out the window when it spun. The vehicle went into a snow bank and was drivable from the scene. The driver went into a river and drowned.