I hate to be a spoil sport, but I would not be placing that thing anywhere near anyone's head or on a seatbelt next to my body. Looking at the mounting bracket, its plastic and holds the hammer in place with a flimsy tab. I would especially not place it overhead where someone's face could come into contact with it in a rollover. And if its on your seatbelt, what is going to happen when a pyrotechnic airbag comes into contact with it.

I happen the think the Life Hammer more marketing hype than anything else. You don't need a hammer to take out a side window in a car, a simple center punch will do and a seat belt can be sliced with much smaller and easier to carry tools which do not have the likelihood of becoming a missle or head-bash point in a collision. Benchmade makes a nice pocket carry all-in-one solution easily carried from vehicle to vehicle. Even the small Res-Q-Me could hang on a keychain and perform the same function.

Think about where you or your unbelted passengers are going to end up in a collision. Notice how the car industry has padded everything that your head may hit and how safety glass breaks on moderate impact into tiny pieces. YMMV.

Craig.