Car Jacking: Do you lock your car doors immediately upon entering your car?

[AnimeSpirit]

Over in South Africa, they have a rather merciless anti-carjacking device because hijacking has been such a horrible problem over there. Motorists can have their cars fitted with a set of flamethrowers underneath the car. When a car jacker approaches the motorist's window, they can stomp on a pedal that sends a wall of flames up both sides of the car, efficiently repelling the would-be car jacker.