You don't need to wear a seat belt if you're traveling at a low speed, right? Wrong. The Convincer, a safety demonstration tool owned by the Connecticut State Police, shows why. Strap in and experience a 5 MPH crash. Feel your chest slam against the seat belt. That hurts, doesn't it? Now imagine if that wasn't your chest hitting the seat belt, but your face hitting the windshield.
That's why you wear a seat belt. When the State Police set up The Convincer at the University of Hartford, they were very convincing.
They also had a car rollover simulator, which looks fun!
-via Twisted Sifter