[quote="X5Sport"]
Most of the newest cars have a Reversing Sensor that warns the driver before the rear bumper actually comes into contact with something. 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.
See the below photo of his Reversing Sensor - It emits a high-pitched squeal when the vehicle backs into something.

[/quote]
when did 535dboy move to china?!
xx