About $3.
I don't think a rock would be very effective when you're stuck inside your car and it's on fire, sinking under water, or pinned under an 18 wheeler. There's a video out of a news reporter trying to break a window with a hammer failing miserably. The automatic center punch takes virtually no effort to use.
I don't think a rock would be very effective when you're stuck inside your car and it's on fire, sinking under water, or pinned under an 18 wheeler. There's a video out of a news reporter trying to break a window with a hammer failing miserably. The automatic center punch takes virtually no effort to use.
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