Yes, now-a-days, the car makers or we can say the auto makers are very much concerned about the music sytem in the car. Many car makers are trying to use the echo cancellation as well as the noise cancellation algorithm. By using these, we can get high quality audio. Audio synthesis and noise reduction is really necessary in cars and this is a very good article as it described about the same briefly. Because of cars our environemnt is getting polluted more and more. So, first of all we need a car that is environmnt friendly and as the price of the fuel is getting increased day by day. So, we also need a fuel effcient vehicle too.