* Website www.oncar.com   ★ Why do you need oncar?       * No more smartphone cradle!       - It is quite annoying to use smartphone map on the small screen of your smartphone, isn't it?       - It is also annoying that you can't listen to the music played on your smartphone through the audio system in your car.       - It is too difficult and dangerous to manipulate your smartphone with such a small screen while you are driving your car.  ★ Service Features       * You can use the function