Could not pass this hope that it has not been posted
Remember the sensor that comes in contact before the bumper actually comes in contact with whatever it is about to hit? No wonder it works so well. Lots of the newer cars have a Back-Up Sensor that warns the driver before the rear bumper actually comes in contact with something.
Who invented this sensor?
I bet you think it was Ford, maybe GM, how about Chrysler, No? then how about Mercedes Benz, or possibly the French or Italians? No. It was a Chinese farmer. His invention was simple and effective. It emits a high-pitch noise beforethe vehicle backs into something. Here's his first prototype... Click Here