Whoever thought a radar gun and an airbag could provide protection from Rocket Propelled Grenades (RPG)? According to an article in Military Strategy Page, there is a new system undergoing tests that uses a modified car airbag, radar technology found in police radar guns, and basic computer control software. The radar constantly scans for any object fitting the size and speed profile of an incoming RPG warhead. If one is detected, the airbag deploys, and sets off the RPG warhead a safe distance from the vehicle. A system capable of protecting a small military vehicle, like a hummer, would weigh about 125 pounds, run off the vehicle power supply and cost about $10,000.