There's Bear Grylls' Survival Belt, and then Bowen's Belt Buckle Knife, which is designed to work with special sheath belts that let you carry a heat-treated, 420 stainless steel blade stealthily. Each one is made in the USA, and available in both single as well as double-edged versions, in narrow or wide styles. When needed, the knife can be removed in seconds without any special mechanisms or movements necessary. Click here to view the first image in this week's geek life gallery. Continue reading for a viral video showing why you should never drive too fast at the Nurburgring racetrack in Germany.