People have only just learnt what the black dots on their car windscreens are there for, as they serve a really important job that many might not know about. No matter how much you may think you know about your car, sometimes you may be surprised by a hidden feature that you may not have otherwise thought about. From the purpose of the buttons available on your dashboard , to the hidden features in the motor or in the car's design, you might be surprised by how many of them have a unique