This Vehicle is Reversing....

CAR BACK-UP SENSOR : Most of the newest cars have a "Back-Up Sensor" that warns the driver before the rear bumper actually comes in contact with summat. Most people probably think that this valuable feature came out of the minds of engineers, but it was recently disclosed that the concept was first developed by a Chinese farmer. His invention was simple and effective. It emits a high-pitched squeal when the vehicle backs into something....               Austin Knight