http://news.bbc.co.uk/1/hi/world/africa/232777.stm
Car drivers in South Africa are being offered a new method of preventing hijacking.
A blaster, flame-thrower operated by a foot pedal inside the car, blasts a jet of fire at a would-be hijacker.
A person confronted by an armed hijacker simply presses a pedal and the "blaster" ignites gas that shoots from the under-side of the car.
Doctors say the device is lethal - but the police have confirmed it is perfectly legal.