There are a number of reasons why we may feel sleepy in cars. One is that the body wants to make up for sleep because the night before the trip we are busy preparing to sleep late
A device that produces white noise (White Noise) is the simplest solution to prevent other noises from affecting you. Other sounds will be blocked by white noise before reaching
The device uses an algorithm that emits sound to increase the amplitude of brain waves, helping you sleep deeper.
According to How Stuff Works, all living things in nature try to gain an advantage when searching for the next meal.