Most of the cars that you see today come with their own stereo or audio system. 
This is a big indication that car electronics are highly in demand to car owners and motorists. Why not if audio system is the way for drivers like you not to get bored while driving on the streets? This is especially true when you are trapped in a traffic jam that can be very depressing or in times when you are having a long trip alone.
With an audio system installed in your car, you can while the hours away without taking notice of it. Why? It is because you are being entertained by whatsoever audio materials you have played on it. For one, you can simply listen to your favorite music collection via your CD or DVD player attached to your stereo system. With music, everything goes on smoothly as it should.
Now, the problem is that cars usually have limited spaces inside and the need to install a stereo system inside is a way impossible if you come to think of it. And when we talk about stereo systems, different things are considered such as speakers, subwoofers, player, and others.