Almost every car windshield has distinctive black dots of varying sizes along its edges. These dots can be found in vehicles ...

Many motorists are discovering that the small black dots along the edge of their car windscreens - whether petrol, diesel, or electric - play a crucial role in their driving experience.

Thus saturated, each dot is held in the desired position because the black side of the dot is made from magnetic material. But wait, there’s more — on further inspection, [Mike] discovered ...